Objectives: The objective of this work was to assess the reliability and validity of the Treatment Motivation Questionnaire— Revised (TMQ-R) in people with serious mental illness (SMI). Method: A large sample of consumers of mental health services (n = 469) were administered the TMQ-R. Results: The factor structure specified in previous research did not fit the data well. However, a five-factor model with the two subtypes of introjected (i.e., feeling guilty about not attending treatment) and external motivation (i.e., pressure to attend treatment) fit the data well. Conclusions: The current analyses partially confirm the TMQ-R structure and reflect the need for future work to evaluate the complexities of motivational measurement within people with SMI.
Deci, E.L. ( 1971). Effects of externally mediated rewards on extrinsic motivation . Journal of Personality and Social Psychology, 18, 105-115.
4.
Deci, E.L. ( 1995). Why we do what we do: Understanding self-motivation. London: Penguin.
5.
Deci, E.L., Koestner, R., & Ryan, R.M. ( 1999). A meta-analytic review of experiments examining the effects of extrinsic rewards on intrinsic motivation. Psychological Bulletin, 125, 627-668.
6.
Deci, E.L., & Ryan, R.M. ( 2000). The ‘‘What’’ and ‘‘Why’’ of goal pursuits: Human needs and the self-determination of determination . Psychological Inquiry, 11, 227-268.
7.
DeVellis, R.F. ( 2003). Scale development: Theory and applications (2nd ed., Vol. 26). Thousand Oaks, CA: SAGE.
8.
Elbogen, E.B., Swanson, J.W., Swartz, M.S., Van Dorn, R., Ferron, J.C., Wagner, H., et al. (2007). Effectively implementing psychiatric advance directives to promote self-determination of treatment among people with mental illness. Psychology, Public Policy, & Law, 13, 273-288.
9.
Endicott, J., Spitzer, R.L., Fleiss, J.L., & Cohen, J. ( 1976). The Global Assessment Scale: A procedure for measuring overall severity of psychiatric disturbance. Archives of General Psychiatry, 33, 766-771.
10.
Fenton, W.S., Blyler, C.R., & Heinssen, R.K. (1997). Determinants of medication compliance in schizophrenia: Empirical and clinical findings. Schizophrenia Bulletin, 23, 637-651.
Kline, R.B. ( 2005). Principles and practice of structural equation modeling . New York: Guilford.
13.
McEvoy, J.P., Apperson, L.J., Appelbaum, P.S., Ortlip, P., Brecosky, J., Hammill, K., et al. (1989). Insight in schizophrenia: Its relationship to acute psychopathology. Journal of Nervous and Mental Disorder , 177, 43-47.
14.
Moerner, M.G., Mannuzza, S., & Kane, J.M. ( 1988). Anchoring the BPRS: An aid to improved reliability. Psychopharmacology Bulletin, 24, 112-117.
15.
Monahan, J., Redlich, A.D., Swanson, J.W., Robbins, P.C., Appelbaum, P.S., Petrila, J., et al. (2005). Use of leverage to improve adherence to psychiatric treatment in the community. Psychiatric Services , 56, 37-44.
16.
Raubenheimer, J.E. ( 2004). An item selection procedure to maximize scale reliability and validity. South African Journal of Industrial Psychology , 30, 59-64.
17.
Ryan, R.M., & Deci, E.L. ( 1995). Overview of self-determination theory: An organismic dialectical perspective. In R. M. Deci & E. L. Ryan (Eds.), Handbook of self-determination research (pp. 3-33). NY: University of Rochester.
18.
Ryan, R.M., Plant, R.W., & O’Malley, S. (1995). Initial motivations for alcohol treatment: Relations with patient characteristics, treatment involvement and dropout. Addictive Behaviors, 20, 279-297.
19.
Selzer, M.L. ( 1971). The Michigan Alcoholism Screening Test: The quest for a new diagnostic instrument. American Journal of Psychiatry , 127, 1653-1658.
20.
Skinner, H.A. ( 1982). The Drug Abuse Screening Test. Addictive Behavior, 7, 363-371.
21.
Swanson, J.W., Swartz, M.S., Elbogen, E.B., Van Dorn, R.A., Ferron, J., Wagner, H.R., et al. (2006). Facilitated psychiatric advance directives: A randomized trial of an intervention to foster advance treatment planning among persons with severe mental illness. American Journal of Psychiatry, 163, 1943-1951.
22.
Swanson, J.W., Swartz, M.S., Elbogen, E.B., Wagner, H.R., & Burns, B.J. ( 2003). Effects of involuntary outpatient commitment on subjective quality of life in persons with severe mental illness. Behavioral Sciences and the Law, 21, 473-491.
23.
Swartz, M.S., Wagner, H., Swanson, J.W., Hiday, V.A., & Burns, B.J. ( 2002). The perceived coerciveness of involuntary outpatient commitment: Findings from an experimental study. Journal of American Academy of Psychiatry and Law, 30, 207-221.
24.
Thompson, B. ( 2004). Exploratory and confirmatory factor analysis: Understanding concepts and applications. Washington, DC: American Psychological Association.
25.
Williams, G.C., & Deci, E.L. ( 2001). Activating patients for smoking cessation through physician autonomy support. Medical Care, 39, 813-823.
26.
Williams, G.C., Grow, V.M., Freedman, Z.R., Ryan, R.M., & Deci, E.L. ( 1996). Motivational predictors of weight loss and weight-loss maintenance. Journal of Personality and Social Psychology , 70, 115-126.
27.
Williams, G.C., McGregor, H.A., Zeldman, A., Freedman, Z.R., & Deci, E.L. ( 2004). Testing a self determination theory process model for promoting glycemic control through diabetes self-management. Health Psychology, 23, 58-66.
28.
Williams, G.C., Rodin, G.C., Ryan, R.M., Grolnick, W.S., & Deci, E.L. ( 1998). Autonomous regulation and long-term medication adherence in adult outpatients. Health Psychology, 17, 269-276.
