Research methods in psychology worksheet with answers

The median of the scores 3, 7, 8, 12, 20 is:

1. A12
2. B10
3. C8
4. D7

The right to withdraw means that participants:

1. AMust complete the study once they have started
2. BCan see other participants' results
3. CCan leave the study at any time and may ask for their data to be removed
4. DCan choose which condition they are in and can switch conditions at any point

Which measure of central tendency is most affected by extreme values?

1. AThe mode
2. BThe mean
3. CAll are equally affected
4. DThe median

In a correlation, r = 0.40. What proportion of variance in one variable is shared with the other?

1. A4%
2. B60%
3. C16%
4. D40%

Which statistic is appropriate for the relationship between two sets of ranks, such as judges' rankings of paintings?

1. APearson's r
2. BSpearman's rho
3. CIndependent t-test
4. DChi-square

Split-half reliability involves:

1. AComparing scores on two halves of the same test to check internal consistency
2. BSplitting the sample into an experimental and a control group and comparing their scores
3. CTesting two halves of the sample at different times
4. DUsing two observers for half the sessions each

What is the main purpose of random allocation to conditions in an experiment?

1. ATo spread participant variables evenly so they do not confound the results
2. BTo make the sample representative of the target population so results generalise
3. CTo ensure participants do not know the aim
4. DTo increase the response rate

Interpretative phenomenological analysis (IPA) mainly aims to:

1. AExplore how individuals make sense of their own lived experiences
2. BTest causal hypotheses with large samples
3. CMeasure reaction times accurately
4. DCount the frequency of words in texts