CHYS 2P52 Study Guide - Midterm Guide: Bar Chart, Type I And Type Ii Errors, Contrived

• School: Brock University
• Department: Child and Youth Studies
• Course: CHYS 2P52
• Professor: Jan Frijters

Document Summary

Makes little or no attempt to minimize threats. Makes some attempt to minimize threats to internal validity. Are not true experiments because they have an ambiguous cause and effect relationship. Both produce groups of scores to be compared for significant differences. Different groups or conditions are not created by manipulating an independent variable. Groups are defined in terms of participant characteristics or time. Research study where different groups of participants are formed under circumstances that do not permit the researcher to control the assignment of individuals to groups. Assignment bias = internal threat: producing groups with different characteristics. E. g. studying gender or age differences or personality. One group is given treatment, then measured. The other group receives no treatment but is also measured or observed. X = treatment, o = observation; xo = treatment group, o = non-equivalent control group) Stronger version of non-equivalent control group design. Represented as o x o (treatment group); o o (non-equivalent control group)