Psychology Student Experiment Key Words

The group of people about which we wish to draw conclusions

• Sample

• Population

• Independent Group

• Control Group

The members of the population who have been chosen to take part in the research

• Sample

• Population

• Experiment group

• Control group

A sampling procedure in which every member of a population has an equal chance at being selected.

• Convenience sampling

• Repeated measures design

• Systematic sampling

• Random sampling

A subject selection procedure where each participant is part of the experiment and control group

• Longitudinal design

• Independent groups design

• Repeated measures design

• Matched-pairs design

Allocating participants to an experiment and a control group at random

• Independent groups design

• Repeated measures design

• Longitudinal design

• Matched-pairs design

The extent to which an instrument measures what it is supposed to measure

• Consistency

• Reliability

• Validity

• Accuracy

The extent to which a measure could be expected to produce the same result with the same conditions on other occasions.

• Consistency

• Validity

• Reliability

• Accuracy

A comparison of means in data that reveals how significantly different they are.

• Standard deviation

• Error-bars

• T-Test

• Range

How much the members of a group differ from the mean value for the group.

• Standard Deviation

• Range

• T-Test

• R-value

Which of the following is NOT a measure of central tendency?

• Range

• Mean

• Median

• Mode