1. Multiple regression: Testing and interpreting interactions;Aiken,1991
2. Cluster analysis;Aldenderfer,1993
3. Achievement goals and the classroom motivational climate;Ames,1992
4. Motivation and schooling in the middle grades;Anderman;Review of Educational Research,1994
5. Expanding the discussion of social perceptions and academic outcomes: mechanisms and contextual influences;Anderman,1999