Unit 1 11-20

Question 1

Variable

Answer 1

Anything that can vary and is feasible and ethical to measure

Question 2

Illusory correlation

Answer 2

Perceiving a relationship where none exists, or perceiving a stronger-than-actual relationship (ex. Gamblers and dice)

Question 3

Regression toward the mean

Answer 3

The tendency for extreme or unusual scores to regress toward their average

Question 4

Experiment

Answer 4

A research method in which an investigator manipulates one or more factors to observe the effect on some behavior or mental process. By random assignment of participants, the experimenter aims to control other relevant factors.

Question 5

Experimental group

Answer 5

The group that is exposed to the treatment, that is, to one version of the IV

Question 6

Control group

Answer 6

The group that is not expose to the treatment; contrasts with the experimental group and serves as a comparison for evaluation the effect of the treatment

Question 7

Random assignment

Answer 7

Assigning participants to experimental and control conditions by chance, thus minimizing preexisting differences between those assigned to the different groups

Question 8

Single blind procedure

Answer 8

An experimental procedure where participants do not know which experimental condition they have been assigned to but the experimenter does

Question 9

Double blind procedure

Answer 9

An experimental procedure in which both the research participants and the research stafff are bling about whether the research participants have received the treatment or a placebo. Commonly used in drug-evaluation studies

Question 10

Placebo effect

Answer 10

Experimental results caused by expectations alone; any effect on behavior is caused by the administration of an inert (inactive) substance or condition, which the recipient assumes is an active agent.