The influence of autonomous and controlling motives on physical activity intentions within the Theory of Planned Behaviour.

OBJECTIVES: This study aimed to examine how general motives from self-determination theory (SDT; Deci & Ryan, 1985) influence intentions to engage in physical activity within the Theory of Planned Behaviour (TPB; Ajzen, 1985). It was hypothesized that the general motives will influence intentions only when mediated by the specific cognitions of attitude, subjective norms and perceived behavioural control (PBC) from the TPB. DESIGN: A cross-sectional study assessing psychological variables from two theoretical perspectives. METHOD: Self-report questionnaires were administered to 1088 children aged 12-14 years. The children's intentions, attitudes, subjective norms and PBC towards participating in physical activity were assessed using a TPB questionnaire. A modified verson of Ryan and Connell's (1989) perceived locus of causality (PLOC) inventory was used to measure controlling and autonomous motives for participating in physical activity. RESULTS: These data were analysed using structural equation modelling. The resulting well-fitting model demonstrated that attitude and PBC mediated the influence of autonomous motives to perform physical activity on physical activity intentions. The presence of autonomous motives resulted in the effects of the controlling motives being attenuated to zero. CONCLUSIONS: The present results indicate that general autonomous motives to participate in physical activity act as sources of information when childen make their judgments regarding their specific attitudes and PBC. Attitudes and PBC are necessary to translate these general motives from SDT into intentions in the TPB. In terms of targets for intervention, practitioners may positively influence intentions by providing a choice of physical activities to foster increased autonomy in children.

[1]  W H Dietz,et al.  Psychosocial correlates of physical activity among fifth and eighth graders. , 1996, Preventive medicine.

[2]  Mark Conner,et al.  Distinguishing Perceptions of Control From Self‐Efficacy: Predicting Consumption of a Low‐Fat Diet Using the Theory of Planned Behavior , 1999 .

[3]  J. S. Long,et al.  Testing Structural Equation Models , 1993 .

[4]  J. S. Long,et al.  Testing Structural Equation Models , 1993 .

[5]  J. Sallis,et al.  Policy framework for young people and health-enhancing physical activity , 1998 .

[6]  Registration of Children in a Physical Activity Program: An Application of the Theory of Planned Behavior , 1996 .

[7]  P. Bentler,et al.  Comparative fit indexes in structural models. , 1990, Psychological bulletin.

[8]  D. Parker,et al.  Extending the theory of planned behaviour: The role of personal norm , 1995 .

[9]  P. Sheeran,et al.  Evidence that intentions based on attitudes better predict behaviour than intentions based on subjective norms. , 1999 .

[10]  D. Terry,et al.  The theory of planned behaviour: the effects of perceived behavioural control and self-efficacy. , 1995, The British journal of social psychology.

[11]  Len Almond,et al.  Children's Physical Activity Levels and Attitudes Towards Physical Activity , 1997 .

[12]  Peter M. Bentler,et al.  EQS : structural equations program manual , 1989 .

[13]  A. Manstead,et al.  Distinguishing between perceived behavioral control and self-efficacy in the domain of academic achievement intentions and behaviors , 1998 .

[14]  M. Hagger.  The role of perceived control in the theory of planned behaviour in a physical activity context with children , 1998 .

[15]  Albert V. Carron,et al.  Application of the Theories of Reasoned Action and Planned Behavior to Exercise Behavior: A Meta-Analysis , 1997 .

[16]  W. Taylor,et al.  Effects of Physical Activity on Psychological Variables in Adolescents , 1994 .

[17]  I. Ajzen,et al.  Understanding Attitudes and Predicting Social Behavior , 1980 .

[18]  R. Bagozzi.  A Field Investigation of Causal Relations among Cognitions, Affect, Intentions, and Behavior , 1982 .

[19]  S. Biddle,et al.  A Meta-Analysis of Perceived Locus of Causality in Exercise, Sport, and Physical Education Contexts. , 2003 .

[20]  Edward L. Deci,et al.  Intrinsic Motivation and Self-Determination in Human Behavior , 1975, Perspectives in Social Psychology.

[21]  S. Biddle,et al.  A self‐determination theory approach to the study of intentions and the intention–behaviour relationship in children's physical activity , 1997 .

[22]  Stuart J. H. Biddle,et al.  Functional significance of psychological variables that are included in the Theory of Planned Behaviour: a Self-Determination Theory approach to the study of attitudes, subjective norms, perceptions of control and intentions , 1998 .

[23]  P. Corr.  Perceived control, motivation, and coping: E. A. Skinner: London: Sage Publications (1995). Paperback: £15.50. ISBN 0-8039-5561-8; hardback: £34.95, ISBN 0-8039-5560-X, 214 pp , 1996 .

[24]  J. Beckmann,et al.  Action control : from cognition to behavior , 1985 .