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Parker, Philip D.; Martin, Andrew J.; Martinez, Carissa; Marsh, Herbert W.; Jackson, Susan A. – Health Education & Behavior, 2010
The present study explores the validity of a recent stages of change (SoC) measure and algorithm among a sample of late adolescents. MANOVA and structural equation modeling are used to assess the relationship between five SoC groups (precontemplation, contemplation, preparation, action, and maintenance) and a set of dependent measures including…
Descriptors: Physical Activities, Structural Equation Models, Physical Activity Level, Construct Validity
Marsh, Herbert W.; Craven, Rhonda G. – 2002
This chapter examines how adolescents' self-concept beliefs are powerfully influenced by frame of reference effects, which involve students comparisons of their ability levels with those of other students in the immediate context as well as assessments of their own ability and academic accomplishments. Noting that academic self-concept is…
Descriptors: Academic Ability, Academically Gifted, Adolescent Attitudes, Adolescents