Define: ecological validity
How applicable a study is to everyday life
Strengths and weaknesses of ecologically valid research
Weaknesses
Difficult to control variables in the natural environment. • Could be unethical as participants do not know they are in a study. • Can be unreliable as difficult to replicate.
Strengths
Useful as the study is naturalistic so can be applied to everyday life. • Participants do not know they are in a study so results are more natural. • Participants do not know they are in a study so results are more valid.
List the advantages of ecologically valid research
a
Define: ethics
Guidelines put in place in order to protect the rights of research participants, and protect them from physical or psychological harm
Can breaking ethical guidelines be justified?
No:
- Participants will find the experience upsetting
- Will give Psychology a bad reputation
- In the future, people will not want to participate in psychological research
- Studies may not get funding easily
Yes:
-May avoid demand characteristics/social desirability as participants do not know they are in a study
- May be able to study anti-social behaviour as participants will be placed into uncomfortable situations
- Research may be more useful as the studies will be more realistic
Define: ethnocentric bias
A distortion caused by a focus on the researcher’s own culture which narrows the appropriateness of the methods when used with participants from other cultures and causes a lack of generalisability of the finding to other cultures.
List the problems faced when trying to avoid ethnocentric bias
Explain: individual and situational explanations
A situational explanation is where our behaviour is explained in terms of the situation we are in. For example, we might be aggressive because we were raised in an aggressive home.
An individual explanation is where our behaviour is explained in terms of a person’s disposition and personality. For example, we might be aggressive because that is part of our natural personality.
List problems with investigating situational or individual behaviour
Explain: nature and nurture debate
Whether behaviour is due to biological influences or learning
List the problems with investigating whether behaviour is due to nature or nurture
Difficult to distinguish whether behaviour is due to nature or nurture. Studies are often on children which may be unethical. Studies may lack ecological validity. Validity/reliability of measuring devices used. Sample may not be representative. Difficult to find a representative sample. If very realistic may be unethical. If informed consent obtained may be unrealistic. Difficult to control the variables in very realistic studies. Difficult to replicate due to lack of control.
List the strengths in investigating nature/nurture
Define: psychometric test
Mathematical measure of the mind
List the advantages of using psychometric tests
Can be ethical as participants are often asked to carry out a straightforward test.
Produces numerical data so comparisons can be made between groups.
Reliable as easy to repeat test at a later stage.
Useful as a diagnostic tool.
Tests have gone through lengthy processes to be created so are valid.
Objective as the responses of the participants are not judged by the psychologist.
Can test a large number of participants easily.
List advantages of collecting quantitative data
Easy to compare groups of participants.
Easy to apply statistical tests to the data.
Sometimes easier to interpret
Easy to summarise results
Sometimes faster for the participants to do the study
List problems with collecting qualitative data
Define: generalisations
The extent to which one group’s results can be applied to the general population / the situation in the study is realistic
List the problems faced when trying to make generalisations from research
Define: application to everyday life
This is whether research is useful and can improve the lives of people in their day to day lives.
Define: snapshot data
Data collected over a short period of time in one place
List the advantages and disadvantages of data collected using the snapshot method
Does not show change over time. Often lab studies as these are quick. May not be time to give a full debrief. Cannot collect detailed data. Often reductionist as data is simplistic.
Longitudinal
a
adv disadv
a
List the problems with using children in research