I got some great questions about fixed and random effects, which are difficult and abstract concepts.

I've attached a (non-narrated) powerpoint, which I also added to the end of Week 06, that is an illustration FROM the data you analyzed yesterday.  It illustrates both the fixed AND random effect of CSES in the High School and Beyond data.

Can you take a look and see if this helps clarify things for you?


Michael Marsiske, Ph.D.
Associate Professor
Department of Clinical and Health Psychology
PO Box 100165,
1225 Center Drive, Rm. 3150
Gainesville, FL  32610-0165
Phone:  (352) 273-5097
Fax: (801) 720-5897
Email: [log in to unmask]<>