Assignment bias refers to a threat to internal validity that occurs when the process used to assign different participants to different treatments produces groups of individuals with noticeably different characteristics.

Related Articles

Fatigue at psychology-glossary.com■■■■■
Fatigue refers to a loss of work capacity that results when the body depletes its energy and is unable . . . Read More
Nonresponse bias at psychology-glossary.com■■■■
Nonresponse bias is the distortion of survey results due to the differential rate of responding by various . . . Read More
Multiple-treatment interference at psychology-glossary.com■■■■
Multiple-treatment interference refers to a threat to external Validity that occurs when participants . . . Read More
Mortality as a threat to internal validity at psychology-glossary.com■■■■
- Mortality as a threat to internal validity : Mortality as a threat to internal validity refers to a . . . Read More
Compensatory rivalry at psychology-glossary.com■■■■
Compensatory rivalry refers to a threat to internal validity that occurs when an untreated group learns . . . Read More
Counterbalancing at psychology-glossary.com■■■■
Counterbalancing is a term describing any technique used to vary systematically the order of conditions . . . Read More
Evaluation at psychology-glossary.com■■■
Evaluation is defined as the process of judging the quality or value of a performance or a course of . . . Read More
Nonequivalent control group design at psychology-glossary.com■■■
Nonequivalent control group design refers to a research design in which the researcher does not randomly . . . Read More
Matching at psychology-glossary.com■■■
Matching is one term in connection with experiments that refers to the procedure whereby pairs of subjects . . . Read More
Nonequivalent group design at psychology-glossary.com■■■
Nonequivalent group design refers to a research study in which the different groups of participants are . . . Read More