HDFS328 Lecture Notes - Lecture 7: Grade Inflation, Birth Weight, Leg Before Wicket

• School: University of Delaware
• Department: Human Development and Family Studies
• Course: HDFS328
• Professor: Ferrari, Michael

Document Summary

Reining the research (next wed. no class 16th) Levels of variables, operational deinitions, types of measures and scales of measurement. Those speciic to the characteristics of the subjects, their behavior or the environment. Relationship between birth weight and likelihood of having a depressive episode in adolescence. Birth wt was divided into two levels (low and high) Results showed that 38. 1% of females experienced a depressive episode by age 16 when they were lbw vs. 8. 4% of normal birth weight. This was an example of using a subject variable as an independent variable. The number of conditions for a speciic independent variable. There are always at least two levels (exposure to the manipulation and not exposed) There can be many more levels (e. g. dose levels of medication, comparisons of many groups) Some variables are naturally dichotomous (two parts) (e. g. subject variables of sex => m and f) Some are continuous: height, weight and response speed.