AP PSYCHOLOGY

Detailed explanation-1: -In experimental research, random assignment is a way of placing participants from your sample into different treatment groups using randomization. With simple random assignment, every member of the sample has a known or equal chance of being placed in a control group or an experimental group.

Detailed explanation-2: -In general, designs considered to be true experiments contain three basic key features: random assignment of participants into experimental and control groups. a “treatment” (or intervention) provided to the experimental group. measurement of the effects of the treatment in a post-test administered to both groups.

Detailed explanation-3: -Control groups in experiments The treatment group (also called the experimental group) receives the treatment whose effect the researcher is interested in. The control group receives either no treatment, a standard treatment whose effect is already known, or a placebo (a fake treatment to control for placebo effect).

Detailed explanation-4: -In most cases, participants are randomly assigned to either a control group or an experimental group. Because participants are randomly assigned to either group, we can assume that the groups are essentially identical with the exception of the manipulation of the independent variable in the experimental group.