Research methods in psychology worksheet with answers

A case study is:

1. AA statistical review of many published studies
2. BAn in-depth investigation of one person, group or event
3. CA survey of thousands of randomly selected people from the general population
4. DA laboratory experiment with two conditions

A researcher places an advert asking for people to take part in a study. Which sampling method is this?

1. ASystematic sampling
2. BVolunteer (self-selected) sampling
3. CStratified sampling
4. DOpportunity sampling

A correlation of −0.85 indicates:

1. AA strong positive relationship
2. BNo relationship
3. CA weak negative relationship
4. DA strong negative relationship

A study is preregistered. This means that:

1. AThe study has already been published
2. BThe hypotheses, methods and analysis plan are recorded publicly before data collection
3. CParticipants register their consent online
4. DThe results were checked and approved by a second, independent statistician before publication

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

1. AIndependent t-test
2. BPearson's r
3. CSpearman's rho
4. DChi-square

In a positively skewed distribution, such as income:

1. AThere are no extreme scores
2. BThe mean is greater than the median
3. CThe mean and median are always equal
4. DThe mean is less than the median

A psychology department recruits participants only from introductory psychology courses. Critics say samples are "WEIRD". What does this refer to?

1. ASamples that are unusually strange in their behaviour
2. BWestern, Educated, Industrialised, Rich and Democratic samples that may not generalise
3. CSamples that withdraw early from studies
4. DSamples recruited using weighted random methods

A study reports t(28) = 2.50, p = .018 for two independent groups of equal size. How many participants took part?

1. A56
2. B30
3. C28
4. D29