Official Research Methods Flashcards

(181 cards)

1
Q

What are lab experiment ?

A

High level of control the researcher has over all the variables in the study
Uses standardised procedures
Indepedant variable is changed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are strengths of lab experiments?

A

-can establish a cause and effect relationship
-high internal validity
-easily replicated due to standardised procedures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are weakensses of lab experiments?

A

-lack ecological validity
-lack mundane realism lowering the external validity
-ppts are aware they’re being tested so demand characteristics might affect results

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is a field experiment?

A

Conducting the experiment in naturalistic settings
Independent variable is still changed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the strengths of field experiments?

A

-high ecological validity as ppl behave naturally
-have mundane realism
-don’t show demand characteristics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is a weakness of field experiments?

A

-lack control over extraneous variables that could be influencing the measurement of the dependant variable
-difficult to randomly assign resulting in a change in DV might be due to participant variables reducing internal validity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are natural experiment ?

A

Two levels of independent variables have occurred naturally without the influence of the researcher the researcher simply records the change in the dependant variable between the two levels of IV

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are strengths of natural experiments?

A

-allow research to happen in areas that couldn’t happen in controlled experiments
-hihg in external validity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are weaknesses of natural experiments?

A

-can’t find a cause and effect relationship due to not being able to control extraneous variables
-can’t be replicated so low reliability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is a quasi experiment?

A

An experiment whereby the iV hasn’t been determined by the researcher instead it naturally exists e.g. gender difference studies

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are strengths of quasi experiments?

A

Controlled conditions- replicable, high internal validity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are weaknesses of quasi experiments ?

A

Can’t randomly allocate so can’t establish cause and effect

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are aims?

A

General statement made by the researchers which tells us the purpose of their study

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is a hypotheses?

A

Precise statement which clearly states the relationship between the variables being investigated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What’s the difference between a directional and non directional hypotheses?

A

Directional states the direction of the relationship that will be shown between the variables
No directional doesn’t
E.g directional- the more sleep a ppts has the better the memory performance
Non directional-the difference between the hours of sleep will have an effect on memory performance
Directional is usually used when there has been previous research done on this topic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the indepednat variable ?

A

Aspects of the environment which has been manipulated by the researcher to have an effect on the DV which is then measured

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the dependant variable?

A

Measured by the researcher and has caused a change to the IV

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is operationalisation?

A

Act of a researcher clearly defining the variables in terms of how they are being measured

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is an extraneous variable?

A

Any other variable which isn’t the IV that affects the DV and doesn’t vary systematically with the IV

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is a confounding variable?

A

A variable other than the IV which has an effect on the DV and does change systematically with the IV
E.g. time of day those who do the memory test later in the day may be more tried

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What are demand characteristics ?

A

Any cue the researchers or the research situation may give which makes the ppt feel like they can guess the aim of their investigation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is the investigator effect?

A

Any unwanted influence from the researchers behaviour on the DV measured
E.g design of study of selection of ppts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is randomisation?

A

The use of chance to reduce the effects of bias from investigators effect

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is standardisation?

A

Using the exact same formalised procedures and instructions for every single ppts involved in the research process

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
What is opportunity sampling?
Ppts happen to be available at the time which the study is being carried out so are recruited conveniently
26
What are strengths of opportunity sample?
Time Saving and less costly
27
What are weaknesses of opportunity sampling?
-not representative -researcher bias
28
What is random sampling?
When all members of a population have the same chance of being selected Each ppts is assigned a random number and picked from a random number generator
29
What are strengths of random sampling?
No researcher bias
30
What are weaknesses of random sampling?
-time consuming -volunteer bias- ppts can refuse to take part so might end up with an unrepresentative sample
31
What is systematic sampling?
A predetermined system is used whereby every nth member is selected from the sampling frame this numerical selection is applied consistently
32
What are strengths of systematic sampling?
Avoids researcher bias and fairly representative
33
What are weaknesses of systematic sampling?
Not truly unbiased
34
What is stratified sampling ?
Composition of the sample reflects the varying proportions of people in particular subgroups within the population Firstly you identify strat then you calculate the required proportion needed for each stratum based on the target population then select sample at random from each stratum using a random selection method
35
What are the strengths of stratified sampling?
-no researcher bias -representative data due to the proportional strata
36
What are weaknesses of stratified sampling?
-time consuming -identified strata can’t reflect all the differences between the people of the wider population
37
What is volunteer sampling?
Involves self selections whereby the ppts offers to take part in experiment
38
What are strengths of volunteer sampling?
Quick access not time consuming Ppts are more likely to corporate in the study
39
What are weaknesses of volunteer sampling ?
-volunteer bias-might attract a particular person -motivations like money could be driving participation so participants may not take study seriously
40
What is an indepedant group design ?
Ppts only perform in one condition of the IV
41
What are strengths of indepedant group design?
-no order effects -demand characteristics are eliminated
42
What are limitations of indepednat group design?
-no control over ppt variables -need more ppts to gather the same amount of data
43
How can you solve no control over ppt variables?
Random allocation each ppts has the same chance of being in one condition of the IV as another
44
What is repeated measures?
The same ppts take part in all conditions of the IV
45
What are the strengths of repeated measures?
-eliminates ppt variables -not as time consuming
46
What are weaknesses of repeated measures?
Order effect
47
How can you solve order effects?
Counterbalancing when half of the ppts do conditions in one order and the other do it the opposite order
48
What is matched pairs?
Pairs of ppts are first matched on some variable that has been found to affect the DV then one member of each paid does one condition and the other does another
49
What are strengths of matched pairs?
-no order effects -less demand characteristics
50
What are limitations of matched pairs?
-time consuming and expensive -large pool of potential ppts needed -difficult to know which variables are appropriate for the ppts to be matched
51
What is a pilot study ?
A small scale version of an investigation which is done before the real investigation is undertaken
52
What is a single blind procedure?
A research method in which the researchers don’t tell the ppts if they are being given a test treatment or a control treatment
53
What is a double blind procedure ?
Neither ppt or researcher know who is receiving a particular treatment
54
What is a naturalistic observation ?
Watching and recording behaviour in the setting where it would normally take place
55
What are strengths of a naturalistic observation?
-high ecological validity -high extrernal validity
56
What are limitations of a naturalistic observations?
-low ecological validity -replication can be difficult -uncontrolled confounding and extraneous variables are present
57
What is a controlled observation ?
Watching and recording behaviour in a structured enviroemtns
58
What are advantages of a controlled observation?
-researcher is able to focus on a specific aspect of behaviour -more control over extraneous variables and confounding -easy replication
59
What are disadvantages of controlled observations?
-more likely to be observing unnatural behaviour -low mundane realism so low ecological validity -demand characteristics present
60
What are overt observations?
Ppts are watches and their behaviour is being recorded with them knowing they’re being watched
61
What are strengths of overt observations?
-ethically acceptable as informed consent is given
62
What are disadvantages of overt observations?
More likely to be recording unnatural behaviour as they know they’re being watched -demand characteristics likely
63
What are covert observations?
Ppts are unaware that their behaviour is being watched and recorded
64
What are the strengths of covert observation?
-natural behaviour high internal validity -removes participant reactivity where ppts try to make sense of the situation and guess the aim
65
What are the disadvantages of covert observation?
Ethical issues presented and no informed consent is given
66
What are ppt observations?
The researcher who is observing is part of the group that is being observed
67
What are strengths to ppt observation?
More insightful which increases valditity
68
What are disadvantages of ppt observations?
Ppts might change their behaviour if they know they’re being watched Researcher may lose objectivity
69
What are non ppt observations?
Researcher observes from a distance so isn’t part of the group being observed
70
What are strengths of non ppt observations?
Researcher can be more objective
71
What are weaknesses of non ppt observations?
Open to observer bias Researcher may lose some valuable insight
72
What is observer bias?
When an observers reports are biased by what they expect to see
73
What is inter observer reliability?
Many researchers conducting the observation study their reports are compared and a score is calculates
74
What formula is used to calculate inter observer reliability?
Total number of agreements x 100 and any score above 80% is a high inter observer reliability
75
What are unstructured interviews?
Consists of continuous recording where the researcher writes everything they see during the observations
76
What are strengths of unstructured interviews?
More richness and depth of detail
77
What are weaknesses to unstructured interviews?
Produces qualitative data which is more difficult to record and analyse Greater risk of observer bias
78
What are structured interviews?
Researcher quantifies what they are observing using predetermined list of behaviours and sampling methods
79
What are strengths of structured interviews?
Easier as more systematic Quantitative data east to analyse Less risk of observer bias
80
What are weaknesses of structured interviews?
Not much depth of detail Difficult to achieve high inter observer reliability
81
What are behavioural categories ?
Target behaviour being broken up into more precise components which are observable and measurable
82
What is time sampling?
Recording of behaviour within a timeframe that is preestablished before the obersvational study
83
What is a strength of time sampling?
Reduces the number of observations that has to be made so less time consuming
84
What are limitations of time sampling?
Unrepresentative of the observation as a whole if you collect small data
85
What is event sampling?
Involves the counting of the number of times a particular behaviour is carried out by the target group your watching
86
What are strengths of event sampling ?
Good for infrequent behaviours
87
What are limitations of event sampling?
Important details of behaviour might be overlooked Counting errors Difficult to judge the beginning and ending of a behaviour
88
What is a correlation?
A mathematical technique that is used to investigate an association between two variables which are called covariables An association is found if no cause and effect relationship is found
89
What is an association?
No cause and effect relationship was found
90
What do correlation coefficients determine ?
Determines the strength and the relationship between two variables
91
What is a negative correlation?
When one variable increases the other decreases the When data is presented on a scattergram the line of best fit has a negative gradient it has a correlation coefficient of less than 0
92
What is a positive correlation?
When one variable increases the other also increases when the data is presented on a scattergram the line of best fit has a positive gradient it has a correlation coefficient of more than 0
93
What is a zero correlation?
No relationship is found between the co variables when the data is presented on a scattergram no line of best fit can be drawn as the points are random
94
What is a curvilinear relationship ?
As one variable increases so does the other but only up to a certain point after which as one variable continues to increase the other begins to decrease on a graph it forms a u curve E.g. yerkes-Dodson law curve anxiety from memory
95
What are the strengths of correlations?
-can be used as starting points to assess patterns between co variables before committing to conducting an experimental study -quick and economical to carry out -secondary data can be used which makes it less time consuming
96
What are limitations of correlations?
-difficult to establish a cause and effect relationship -there’s a chance of a third variable that the researcher is unaware of that is responsible for the relationship between the co variable -correlations tend to be misused or misinterpreted
97
What are co variables?
The two facotrs collected by the researchers and then compared to each other
98
What’s a scattergram?
A graph used to plot the measurements of two co variables Usually display the relationship between 2 co variables
99
What is a correlation coefficient ?
Represents both the strength and direction of the relationship between the covariabels as a number between -1 and +1
100
What is a weakness of correlation ?
Correlation doesn’t show causation
101
What are strengths of correlations?
-correlation studies can highlight potential causal relationships these can be tested with experimental methods to discover cause and effect relationships -often the covariable data already exists and is easily accessible -correlation coefficient is a useful tool in describing both the direction and strength of relationship between factors
102
What is content analysis?
An indirect obersavtional method that is used to analyse human behaviour investigating through studying human artefacts
103
How do you preform content analysis ?
1.decide a research question 2.select a sample 3.coding- research decides on categories/coding units to be recorded 4.work through the data -tally number of times categories appear 5.data analysis
104
What is test retest reliability?
Run the content analysis again on the same sample and compare the two sets of data
105
What’s inter rater reliability?
A second rater also performs the content analysis with the same set of data and the same behavioural catergoties compare the two sets of data
106
What are case studies?
Range of data collected from an individual, group or institution manly data is collected using interviews and observations Usually qualitative data collected Longitudinal case studies
107
Non directional hypothesis ?
States that there is a difference in the measurement of the dependant variable but not the direction the results will go
108
What is the directional hypothesis ?
States that there is a difference in the measurement of the dependant variable and says which direction the results will go
109
What is falsifiability ?
Any theory even well established theories backed up with a significant amount of prior evidence have to be open to the possibility that new research will emerge that contradicts its basic principles
110
Ethical guidelines what are they ?
Practicing psychologists are expected to design and conduct research that follows a set of guidelines published by the BPS (British psychological society)
111
What are the ethical issues?
-informed consent -right to withdraw -protection from harm -deception -confidentiality -debriefing
112
How can you deal with ethical issues ?
-informed consent -prior general consent -retroactive consent -researcher asks for consent after the ppt has taken part in the study -presumptive consent- researcher asks a group similar to the sample if they would agree to take part in the research if the group agrees the researcher assumes that the ppts would also agree
113
What is a single blind peer review?
The author doesn’t know who the peers are
114
What is the double blind peer review?
Aurthor doesn’t know who the peers are and the peers don’t know who the author is
115
What is empiricism ?
The philosophical position that factual knowledge can only come from out experience with the world this means that ideas supported only by speculation locgical argument,beleif,accepted wisdom or direct from theory aren’t empirical
116
What is objectivity ?
Data should be collected and interpreted in ways that avoid bias
117
What is systematic data collection?
Data gathering is carefully planned out and consistent for each participant the data collection measures like questionnaire questions or experimental procedures should be carefully designed or the researcher should use established questions or tests
118
What are the features of science
Empirical method Objectivity Replicability Falsifiability Paradigm shift
119
What was popper black swan ?
Popper gave the example theory ‘all swans are white’ as an example of a falsifiable theory
120
What are paradigm shift and who says it?
Thomas Khun Paradigms are a set of established assumptions and sometimes they change and new evidence proves they changed
121
Designing an experiment
122
What’s a null hypothesis ?
A statement that there is no significant relationship of difference between the variables being studied
123
Trying to prove the null hypothesis is wrong
124
What is parametric?
Data has equal intervals and is more mathematical
125
What is non parametric?
My data is in categories or order less mathematical
126
What are the features of an abstract?
Summary of research 100-300 words It’s the first section of a report Includes the aim,methods,results, conclusion
127
What are controlled observations?
Some control of variables including control of CV/EV
128
What are appropriate measures for ordinal normal and interval data?
Nominal: mode,n/a for dispersion Ordinal: median,range Interval: mean,standard deviation
129
What’s qualitative data?
Data which is displayed in words, is non numerical
130
What is qualitative data ?
data which is displayed in words, is non-numerical.
131
What are the strengths of qualitative data?
- More richness and depth of detail. - Allows participants to further develop their opinions hence has greater external validity. - A more meaningful insight into the participants' views is achieved.
132
What are weaknesses of qualitative data?
- Difficult to analyse. - Difficult to make comparisons with other data. - Researcher bias presented as conclusions rely on the subjective interpretations of the researcher (interpretative bias).
133
What’s quatative data?
Data that is numerical
134
What are strengths of qantative data?
- Can be analysed statistically so converted to graphs or charts. - This makes it easy to make comparisons with other data.
135
What are weaknesses of quatative data?
- Lack of depth in detail. - No meaningful insight into participants' views. - As participants are not able to develop their opinions the results have low external validity.
136
What is primary data?
Obtained first hand by researcher
137
What are strengths of primary data?
-Targets the exact information which the researcher needs, so the data fits their aims and objectives
138
what are weaknesses of primary data?
Requires time and effort and can be expensive
139
What is secondary data?
Collected by someone else but used for their own investigation ‘desk research’
140
What are strengths of secondary data?
Expensive Requires minimal effort
141
What are weaknesses of secondary data?
Outdated or incomplete May not be reliable
142
What is a meta analysis ?
- this is when a researcher combines results from many different studies and uses all the data to form an overall view of the subject they are investigating.
143
What are strengths of meta analysis ?
More generalisability is possible as a larger amount of data is studied. - The researcher is able to view the evidence with more confidence as there is a lot of it
144
What are weaknesses of meta analysis ?
Publication bias such as the file drawer problem may be presented- this is when the researcher intentionally does not publish all the data from the relevant studies but instead chooses to leave out the negative results. This gives a false representation of what the researcher was investigating.
145
How to calculate mean?
Total of all values and divided by the number of blaues
146
What are strengths of mean?
Makes good use of all values Good for interval data
147
What are limitations of mean?
Influenced by outliers so it can be unrepresenatative
148
How to calculate median?
Arrange data from lowest to highest then find central value
149
What are strengths of median?
Not affected by extreme scores Good for ordinal data
150
What are weaknesses of median?
Doesn’t use all of data
151
How to calculate mode?
Most frequent occurring value in a set of data
152
What are strengths of mode?
Useful for nominal data
153
What’s limitation of mode?
Not useful when there are several modes
154
How to calculate range?
Minus the lowest from the highest score
155
What’s weakness of range? And strength
Easy to calculate Affected by extreme values Doesn’t use all data
156
How to calculate standard deviation?
Square root of the variance calculates SD a low SD means that more data is clustered close to the mean hence there is less data spread
157
Strength of SD?
Precise measure where all values taken into account
158
What are weaknesses of SD?
Diifuclt to calculate Affected by extreme values
159
When are bar charts used and what do they represent ?
This way of representing data allows for differences in data to be seen more clearly. They are used for discrete data, which describes data that has been divided into categories. The bars do not touch each other which shows that we are dealing with separate conditions. The amount of frequency for each category is plotted on the y-axis (vertical axis) whilst the categories (below these are condition A and B) are plotted on the x-axis (horizontal
160
When to use histograms and what for?
In this form, the bars touch each other unlike in bar charts and this represents that we are dealing with continuous data rather than discrete. Therefore the x-axis has equal sized intervals of one category (e.g. scores of an english test in intervals 0-10, 11-21, 22-32, etc.) whilst the y-axis represents the frequency (the number of people that score each mark).
161
What are scattergrams and when to use?
These are used to show associations between co-variables rather than differences hence we came across them in the correlations topic. Either of the co-variables can occupy the x-axis or the y-axis, and each point displayed on the graph coincides with the x and y position of the co varables
162
Negative and positive skews
163
Implactions of research into memeory for economy?
- Led to police using the cognitive interview which reduces wrongful convictions hence reduces waste of money and space in jail.
164
Implications to economy social influence?
Health campaigns. - Unions strike- make working conditions better. - Environmental campaigns-like getting companies to reduce their waste and use of non-renewable energy.
165
Implication to economy for attachment?
Mothers can return to work. - More flexible working arrangements within families. - Can maximise their income and effectively contribute to the economy.
166
What’s a case study
Study into a person life with covers detail into their background looks at past and present
167
Strengths of case studies?
- Detailed so able to gain in depth insight. - Forms basis for future research. - From studying unusual cases you are able to infer things about normal usual behaviour of humans. - Permits investigation of situations that would be otherwise unethical or impractical.
168
What are weaknesses of case studies?
Not generalisable to wider populations as data is only gathered from one person. - Various interviewer biases are presented like social desirability bias (from the unique person's side) and interpretative bias (from the researcher's side). - Retrospective studies may rely on memory which can be inaccurate. - They are time consuming and difficult to replicate.
169
What does a scientific report consists of ?
• Abstract - this part includes a summary of all the key details of the research report. These key details include the aim, hypothesis, method, results and conclusion. It is usually about 150-200 words long and is the part that is supposed to be read to know whether the research study is worth examining any further. • Introduction - This includes information of past research on a similar topic whereby relevant theories, studies and concepts are mentioned. At the beginning it tends to be broad but as it continues towards the end the information becomes more specific until the aims and hypotheses of the study are presented. • Method - This part includes a description of what the researchers exactly did when they undertook the study. This includes the design, sample collected (specific details e.g. target population, sampling method, demographic data of participants), materials used, procedure (specific e.g. standardised instructions for each participant), ethics etc. There should be sufficient detail included so that any other person is able to read this part of the report and replicate the investigation precisely. • Results - This includes all the findings from the study, presented even with inferential and descriptive statistics. If qualitative data is collected then this section may include a thematic analysis. • Discussion - This is where the researcher considers what the findings exactly mean for us and for psychological theories. Usually the findings are summarised here then they are discussed in context to the introduction. Limitations thus ways of improving the study and the wider implications it may have for society may also be discussed here. • Referencing - This is the last part of the scientific report which is basically a list of all the sources that were quoted or referred to in the report. These can vary - journal articles, websites, books- and full details are given so that a reader is able to find the exact source the researcher was referring to.
170
What order are books referened in?
order: authors), date, title of book (in italics or underlined), place of publication, publisher.
171
What order are journal referenced as?
authors), date, title of article, journal name, journal volume, issue number (all appear in italics or underlined apart from author, date and title of journal article), page range.
172
What are open questionnaires?
Open Question - This is when the questions are phrased in a way that the participant is free to answer however they like, there are no restrictions. This type collects qualitative data.
173
What are closed questionnaires?
Closed Question - In contrast, this type of questionnaire consists of questions which restrict you to a fixed number of responses. This type collects quantitative data.
174
What are the strengths of questionnaires?
Strength - Cost-effective. - Gathers large amounts of data quickly. - The researcher does not need to be present. - They are easy to analyse. - As responses can be anonymous this usually means participants are more open.
175
What are limitations of questionnaires?
- Difficult to know whether the target population it was intended for answered it e.g. if it is online. - They take a long time to design. - It is difficult to assess the validity as biases such as social desirability bias (when the participant wants to present themselves in a positive light so is not truthful) are presented. - Participant bias presented from factors such as time, age, gender. -response bias
176
Constructing a questionnaire?
• Clarity - the questions should be phrased in such a way that it is clear for the respondent on what answer is needed from them. • Avoid overuse of jargon, emotive language, double-barrelled questions, double negatives and leading questions. All these can cause biases which affects the validity of the results. • Sequencing questions - easy ones can be first then followed by the harder ones. This allows a build up of confidence in each participant. • Filler questions - these are questions which have nothing to do with the aims of the investigation and are put in to distract the participant from guessing the real aim of the study. Therefore these eliminate demand characteristics. • Pilot study - can be carried out to ensure that the questionnaire is suitable and if not amendments and improvements can be made.
177
Construction of interviews ?
• Recording information - this can be done in various ways e.g. writing down answers, using a video recorder, using an audio recorder. • Ethical issues - Informed consent is needed from the participant for the researcher to obtain and keep the data. The participant should be reminded that their answers will be kept confidential. • Location - A quiet room away from other people is the most appropriate as this location is likely to get the participant to feel comfortable and open up. • Neutral questions - These are usually started with to make the participant feel relaxed and help establish a rapport.
178
What is reliability?
How consistent the findings from investigation are
179
What is concurrent validity?
Refers to the extent to which a psychological measure comapres to a similar existing measure
180
What is thematic analysis ?
Researchers label their data using codes then categorise their codes into themes to find reoccurring themes
181
How to calculate the s value of a sign test
The lowest number found is the s value