experiments - reliability

Question 1

reliability is…

Answer 1

ability to repeat study in same conditions to get consistent results

Question 2

lab experiments

Answer 2

high reliability - controlled setting - high control over extraneous variables

Question 3

field experiment

Answer 3

low reliability - natural environment - low control over extraneous variables

Question 4

natural experiment

Answer 4

low reliability - naturally occurring IV - low control over extraneous variables

Question 5

assessing reliability

Answer 5

test-retest

Question 6

test-retest AO1

Answer 6

1. ppts are given a task/measure to complete CONTEXT
2. ppts given same task after time delay e.g. 2 weeks
3. correlate results from each test CONTEXT using STATS TEST
4. strong positive correlation = +0.8 = high reliability

Question 7

improving reliability

Answer 7

operationalising

Question 8

operationalising AO1

Answer 8

• to be specific and clear about IV and DV
• so easily measured
• study CONTEXT can be easily replicated in same conditions
• to check for consistent results
• consistent results = high reliability