Students’ Motivation and Affection Profiles and Their Relation to Mathematics Achievement, Persistence, and Behaviors

One possible reason for the continued neglect of statistical power analysis in research in the behavioral sciences is the inaccessibility of or difficulty with the standard material. A convenient, although not comprehensive, presentation of required sample sizes is provided here. Effect-size indexes and conventional values for these are given for operationally defined small, medium, and large effects. The sample sizes necessary for .80 power to detect effects at these levels are tabled for eight standard statistical tests: (a) the difference between independent means, (b) the significance of a product-moment correlation, (c) the difference between independent rs, (d) the sign test, (e) the difference between independent proportions, (f) chi-square tests for goodness of fit and contingency tables, (g) one-way analysis of variance, and (h) the significance of a multiple or multiple partial correlation.

<i>Statistical Power Analysis</i> is a nontechnical guide to power analysis in research planning that provides users of applied statistics with the tools they need for more effective analysis. The Second Edition includes: <br> * a chapter covering power analysis in set correlation and multivariate methods;<br> * a chapter considering effect size, psychometric reliability, and the efficacy of "qualifying" dependent variables and;<br> * expanded power and sample size tables for multiple regression/correlation.<br>

1 Theoretical Perspectives The Nature of Human Agency Human Agency in Triadic Reciprocal Causation Determinism and the Exercise of Self-Influence Related Views of Personal Efficacy 2 The Nature and Structure of Self-Efficacy Perceived Self-Efficacy as a Generative Capability Active Producers versus Passive Foretellers of Performances The Self-Efficacy Approach to Personal Causation Multidimensionality of Self-Efficacy Belief Systems Self-Efficacy Causality Sources of Discordance Between Efficacy Judgment and Action 3 Sources of Self-Efficacy Enactive Mastery Experience Vicarious Experience Verbal Persuasion Physiological and Affective States Integration of Efficacy Information 4 Mediating Processes Cognitive Processes Motivational Processes Affective Processes Selection Processes 5 Developmental Analysis of Self-Efficacy Origins of a Sense of Personal Agency Familial Sources of Self-Efficacy Peers and the Broadening and Validation of Self-Efficacy School as an Agency for Cultivating Self-Efficacy Growth of Self-Efficacy through Transitional Experiences of Adolescence Self-Efficacy Concerns of Adulthood Reappraisals of Self-Efficacy with Advancing Age 6 Cognitive Functioning Students' Cognitive Self-Efficacy Teachers' Perceived Efficacy Collective School Efficacy 7 Health Functioning Biological Effects of Perceived Self-Efficacy Perceived Self-Efficacy in Health Promoting Behavior Prognostic Judgments and Perceived Self-Efficacy 8 Clinical Functioning Anxiety and Phobic Dysfunctions Depression Eating Disorders Alcohol and Drug Abuse 9 Athletic Functioning Development of Athletic Skills Self-Regulation of Athletic Performance Collective Team Efficacy Psychobiological Effects of Physical Exercise 10 Organizational Functioning Career Development and Pursuits Mastery of Occupational Roles Self-Efficacy in Organizational Decision Making Self-Efficacy in Enactment of Occupational Roles Collective Organizational Efficacy 11 Collective Efficacy Gauging Collective Efficacy Political Efficacy Enablement by Media Modes of Influence Enablement for Sociocultural Change Underminers of Collective Efficacy References Name and Subject Indexes.