Research methods in psychology worksheet with answers

A hypothesis that predicts a difference but does not say in which direction is called:

1. AAn operational definition
2. BDirectional (one-tailed)
3. CNon-directional (two-tailed)
4. DA null hypothesis

A covert observation is one in which:

1. AThe observer joins the group being observed
2. BParticipants know about the study and agree to it
3. CParticipants do not know they are being observed
4. DBehaviour is recorded in a laboratory

Selecting every 10th name from a list of the population is an example of:

1. ASystematic sampling
2. BSnowball sampling
3. COpportunity sampling
4. DStratified sampling

A student scores 130 on a test with mean 100 and standard deviation 15. What is the z-score?

1. A3.0
2. B1.5
3. C0.5
4. D2.0

A study conducted only with American undergraduates may lack:

1. AInter-rater reliability
2. BPopulation validity
3. CContent validity
4. DInternal consistency

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

1. A4%
2. B60%
3. C40%
4. D16%

A self-report scale finds that people who agree with many statements score high regardless of content. Which response bias is this, and how can it be reduced?

1. ASocial desirability bias; use a larger sample
2. BDemand characteristics; use a double-blind design
3. CAcquiescence bias; include reverse-worded items
4. DOrder effects; use counterbalancing of participants

A researcher uses a questionnaire, interviews and observation to study workplace stress, and the findings agree. What is this approach called?

1. AStratification
2. BTriangulation
3. CReplication
4. DCounterbalancing