Research methods in psychology worksheet with answers

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

1. A12
2. B7
3. C8
4. D10

Social desirability bias in questionnaires means that respondents:

1. AAlways agree with every statement
2. BAnswer in ways that make them look good
3. CChoose answers at random
4. DRefuse to answer sensitive questions

A double-blind procedure means that:

1. ATwo independent researchers analyse the same data set and then compare their conclusions
2. BNeither participants nor the researchers collecting data know who is in which condition
3. CParticipants are tested twice
4. DParticipants cannot see the materials

A study conducted only with American undergraduates may lack:

1. AInternal consistency
2. BInter-rater reliability
3. CPopulation validity
4. DContent validity

In a field experiment, the researcher:

1. AManipulates the IV in a real-world setting
2. BOnly observes without manipulating anything
3. CManipulates the IV in a laboratory
4. DAnalyses data collected by others

Experimenter bias is reduced most directly by:

1. AUsing a one-tailed hypothesis
2. BUsing a larger sample
3. CUsing only volunteers
4. DUsing a researcher who does not know the hypothesis or conditions to collect data

A 2 × 3 factorial ANOVA shows that a drug improves memory in young adults but not in older adults. What has been found?

1. AA Type I error
2. BOnly a main effect of age
3. CAn interaction between drug and age
4. DA floor effect

A memory study uses a repeated measures design where everyone learns list A then list B. Recall is better for list B. What is the most likely flaw?

1. AIndividual differences between the groups
2. BToo large a sample size
3. CThe use of an ordinal level of measurement
4. DOrder effects such as practice, because conditions were not counterbalanced