Mod 6

Question 1

Correlation

Answer 1

A measure of the extent to which two factors vary together, and thus of how well either factor predicts the other.

Question 2

Correlation Coefficinet

Answer 2

A statistical index of the relationship between two things (from -1.00 to +1.00)

Question 3

Variable

Answer 3

Anything that can vary, is feasible, & ethical to measure

Question 4

Scatterplot

Answer 4

A graphed cluster of dots, each of which represents the values of two variables. The slope of the points suggests the direction of the relationship.

Question 5

Illusory Correlation

Answer 5

Perceiving a relationship where none exists, or perceiving a stronger-than-actual relationship

Question 6

Regression Toward the mean

Answer 6

The tendency for extreme or unusual scores or events to fall back (regress) toward the average.

Question 7

Experiment

Answer 7

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

Question 8

Experimental Group

Answer 8

In an experiment, the group that is exposed to the treatment, that is, to one version of the independent variable.

Question 9

Control Group

Answer 9

In an experiment, the group that is not exposed to the treatment; contrasts with the experimental group and serves as a comparison for evaluating the effect of the treatment.

Question 10

Random Assignment

Answer 10

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

Question 11

Double Blind Procedure

Answer 11

An experimental procedure in which both the research participants and the research staff are ignorant (blind) about whether the research participants have received the treatment or a placebo. Commonly used in drug-evaluation studies.

Question 12

Placebo Effect

Answer 12

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

Question 13

Independent Variable

Answer 13

In an experiment, the factor that is manipulated; the variable whose effect is being studied

Question 14

Dependent Variable

Answer 14

In an experiment, the outcome that is measured; the variable that may change when the independent variable is manipulated

Question 15

Validity

Answer 15

The extent to which a test or exponent measures or predicts what it is supposed to