AP Psych Unit 0 Vocab

Front

The tendency to believe, after learning an outcome, that one would have foreseen it.

Back

Hindsight Bias

Front

A carefully worded statement of the exact procedures (operations) used in a research study. For example, human intelligence may be operationally defined as what an intelligence test measures.

Back

Operational Definition

Front

All those in a group being studied, from which samples may be drawn.

Back

Population

Front

A sample that fairly represents a population because each member has an equal chance of inclusion.

Back

Random Sampling

Front

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

Back

Correlation

Front

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

Back

Correlation Coefficient

Front

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

Back

Scatterplot

Front

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

Back

Illusory Correlation

Front

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

Back

Experiment

Front

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

Back

Experimental Group