experiments

Question 1

what is a laboratory experiment?

Answer 1

where the researcher deliberately manipulates an IV while maintaning strict control over the environment through standardised procedures

Question 2

strengths of a laboratory experiment

Answer 2

control - high levels of control over extraneous variables and this makes it more likely to have internal validity
replication - easily replicated due to the standardised procedure so reliability assessed easily

Question 3

limitations of a laboratory experiment

Answer 3

lacks ecological validity due to artifical laboratory environement so not representative of real life behaviour
results could be affected by demand characteristics due to artifical setting

Question 4

what is a field experiment ?

Answer 4

where the researcher deliberately manipulates an IV but in the participants natural setting

Question 5

strengths of a field experiment

Answer 5

greater ecological validity as participant in natural setting so likely to behave in the way they normally would
reduces demand characteristics as participants unaware if they are being studied

Question 6

limitations of a field experiment

Answer 6

more difficult to replicate
ethical issues such as invasion of privacy , deception and causing people stress and embarassment
more difficult to control variables

Question 7

what is a natural experiment ?

Answer 7

where the IV is naturally occuring in the real world and the researcher will come and recors the data after the event

Question 8

strengths of a natural experiment

Answer 8

higher ecological validity
permits study of aspects of life which could not be deliberately manipulated i any other way due to ethical issues

Question 9

limitations of a natural experiment

Answer 9

cannot be replicated
as the Iv is occured naturally participants cannot be randomly allocated to conditions
little control over any variables including the IV

Question 10

what is a quasi experiment ?

Answer 10

naturally occurring IV ( like age or depression ) and the researcher would measure the effects of this on the DV

Question 11

strengths of a quasi experiment

Answer 11

higher ecological validity

Question 12

limitations of a quasi experiment

Answer 12

little control over any variables including the DV
as the IV is naturally occurred participants cannot be randomly allocated to conditions
ethical issues as they usually investigate characteristics of specific groups of people in society