research methods

Question 1

experimental designs (3)

Answer 1

repeated measures, matched participants, independent groups.

Question 2

hypothesis (3)

Answer 2

IV ( variable being manipulated), DV (variable measured), population (group represented by participants)

Question 3

control group

Answer 3

doesn’t receive IV to compare results of IV with experimental group

Question 4

experimental group

Answer 4

receives IV

Question 5

sampling (3)

Answer 5

stratified, random, convenience

Question 6

random sampling

Answer 6

participants have equal chance of selection but time consuming and expensive

Question 7

convenience sampling

Answer 7

fast and allows for large sample size but is hard to generalise (biased)

Question 8

stratified sampling

Answer 8

all characteristics of a population are represented but time consuming

Question 9

matched participants

Answer 9

participants matched based on characteristics that affect DV. 1 partner C group, 1 partner E group. (fewer participant variables but time consuming & withdrawal from one partner must mean withdrawal from the other)

Question 10

independent groups

Answer 10

participants allocated to C group or E group. (fast and low cost but participant variables create EVs)

Question 11

repeated measures

Answer 11

participants allocated to E and C groups. (less participants variables but effect of practice on DV - order effects, and participants may get bored or tired

Question 12

double blind

Answer 12

participant and experimentor don’t know what group each participant is in

Question 13

single blind

Answer 13

only participant Is unaware of group they’re in

Question 14

conclusion

Answer 14

general statement about the results of the study

Question 15

EV

Answer 15

an unwanted effect that alters the result of the study