Research Methods

Question 1

DDD- Chi squared

Answer 1

Nominal, independent measures

Question 2

DDD- Mann Whitney U Test

Answer 2

Ordinal, Independent measures

Question 3

DDD- Sign test

Answer 3

Nominal, Repeated measures/matched pairs

Question 4

DDD- Wilcoxon

Answer 4

Ordinal, repeated measures/matched pairs

Question 5

DDD- spearman’s rank

Answer 5

Ordinal, correlation

Question 6

2 advantages and a disadvantage of brain scans

Answer 6

A- useful for diagnosing brain dissorders
A- can see activity in real time
D- cannot pinpoint exactly area

Question 7

Definition of cross sectional studies

Answer 7

One group of a population compared with another e.g. young v old

Question 8

Advantage and 2 disadvantages of cross sectional studies

Answer 8

A- relatively quick in comparison to longitudinal
D- groups my differ in more ways than behaviour researched
D- cohort effects , same age could share same experiences

Question 9

Concurrent validity definition

Answer 9

Compares current method of measuring with previously validated one. Ps given both measures and scores compared

Question 10

Predictive validity definition

Answer 10

Whether scores on a test predict what you expect to

Question 11

Face validity definition

Answer 11

Self report measure looks like what the research intended to measure e.g related and intuitive measurements

Question 12

Content validity definition

Answer 12

Whether method of measurement measures intended content. Expert calculate

Question 13

Construct validity definition

Answer 13

Extend measures target construction e.g stress

Question 14

Define interater reliability

Answer 14

Observational data- two or more observers should produce same data, correlate agreements, total should be >80%

Question 15

Define test retest

Answer 15

For external. Given test once then again once forgotten and we’re compared by calculating correlation coefficient

Question 16

Define Split half reliability

Answer 16

Ps given a test then group split and results compared using calculation coefficient

Question 17

What is the symbol of R in test name

Answer 17

If there is an R observed value should be gReater than critical
If not then less than

Question 18

How can content analysis be ised

Answer 18

Qualitative data analysed to look fir patterns ( type of word )
The answers compared to see if they give insight into what the majority think

Question 19

Wht duevtge psychologist use a self selected sample

Answer 19

Less ethical issues as p knows what they are letting themselves in for
Less likely to withdraw and will have an opinion
No reesearcher bias

Question 20

Why was Spearemans appropriate

Answer 20

Looking for a correllation and data is ordinal