CHYS 2P52 Study Guide - Quiz Guide: Standard Error, Statistical Inference, Pearson Product-Moment Correlation Coefficient

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

Document Summary

The distinction between these research strategies is the degree to which thy limit confounding and control threats to internal validity. Groups are usually defined in terms of a specific participant characteristic (ex. Two general categories of non-experimental and quasi-experimental designs: between-subjects designs (non-equivalent group designs, within-subjects design (pre-post designs) How assignment bias threatens the internal validity of a non-equivalent group design: A non-equivalent group design has a built in threat to internal validity that precludes an unambiguous cause-and-effect explanation. Assignment bias: occus when the assignment procedure produces groups that have different participant characteristics. For example: the two high schools in the relectronic device study may differ in terms of student iq, socioeconomic background, racial mixture, student motivation, etc. These are all potentially confounding variables because any one of them could expain the differemces between the two groups. Differential research design: a research study that simply compares pre- existing groups, uses a participant characteristic (ex.