4: OCR Psychology Research Methods - planning

An alternative hypothesis should contain...

• IV, DV and a predicted difference or correlation

• IV, DV and a prediction of no difference or correlation

• The type of data predicted and the sample

• The experiment design

The dependent variable is

• The thing you change

• The control group

• The thing you measure

• Something else that affects results

Which of the following is a correlation?

• Difference between mean scores of group A and group B

• Number of participants

• Scores that are a long way from the mean

• A relationship between two co-variables

An extraneous variable is

• The thing you change

• The control group

• The thing you measure

• Something else that can affect your results

What is a random sample?

• Participants volunteer themselves

• Participants are selected at random from a list of possible participants

• Participants are selected because they are convenient

Which of the following means the sample is more representative of the target population?

• It has more women than the target population

• It is a very small sample

• It is conducted at a specific place or time

• It is a large and randomly selected sample

Which one is not an experimental design?

• Natural experiment

• Repeated measures

• Matched pairs

• Independent measures

A repeated measures design:

• One group takes part in both conditions of the IV

• Each group member is matched for similarity with a member of another group

• An experiment that is conducted more than once

• Two groups each take part in one condition of the IV

Strength of independent measures / groups design

• There may be participant variables

• No participant variables

• There may be practice or order effects

• No practice or order effects

Which is a way of dealing with a potential ethical issue?

• Deception

• Psychological harm or distress

• Debriefing

• Use real names