behavioral health hosa

The primary goal of the scientific method in psychology is to:

• Prove theories true

• Test hypotheses and refine theories

• Describe behavior without explanation

• Eliminate all bias

An operational definition describes:

• How variables are measured or defined in a study

• The theoretical background of an experiment

• The researcher's opinion

• The population sample

Which type of research identifies cause and effect?

• Correlational

• Experimental

• Case study

• Naturalistic observation

The independent variable is:

• Measured outcome

• Controlled variable

• Manipulated variable

• Random factor

The dependent variable is:

• What the researcher changes

• What the researcher measures

• Always constant

• Unrelated to the study

Random assignment ensures:

• Equal chance of being in any group

• Random sample selection

A double-blind study helps reduce:

• Random error

• Researcher and participant bias

• Independent variables

• Sample size issues

A correlation coefficient near +1.00 means:

• No relationship

• Weak negative relationship

• Strong positive relationship

• Random data

A case study focuses on:

• Many people for generalization

• A single individual or small group

• Large populations

• Laboratory rats only

A placebo effect occurs when:

• Participants respond to expectations rather than treatment

• A drug has a real effect

• The control group receives no treatment

• The experimenter changes variables