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This longitudinal study applied the integrated model of self-determination theory (SDT) and the theory of planned behaviour (TPB) to explain COVID-19 preventive behaviours among parents of young children in the United States. The study adopted a two-wave longitudinal study design. Parents (N = 681) completed self-report questionnaires related to measures of SDT and the TPB constructs and behavioural adherence at baseline and after one month. We used standardised residual change scores to test the structural relationships of the integrated model. The parameter estimates of the model (CFI >.96, TLI >.86, RMSEA =.05, SRMR =.03) fit acceptably well to the data. Psychological need support was positively and significantly linked to autonomous and controlled motivation and amotivation. Autonomous motivation was positively and significantly correlated with TPB factors, and intention. Intention was a significant and positive predictor of behavioural adherence. The integrated model of SDT and the TPB appeared to be applicable to the explanation of COVID-19 prevention among the U.S. parents. Longitudinal data showed that a psychological need supportive social environment was related to favourable motivation, social cognition beliefs, intention and behavioural adherence to the preventive behaviours of parents protecting their young children from COVID-19. [ABSTRACT FROM AUTHOR]

This study aimed to develop and validate a new measurement tool, the Rehabilitation Adherence Inventory (RAI), to measure patients' rehabilitation adherence. We recruited 236 patients with anterior cruciate ligament (ACL) ruptures from the United Kingdom (Mage = 33.58 ± 10.03, range = 18 to 59; female = 46.2%). Participants completed a survey, that measured their rehabilitation adherence, rehabilitation volume, psychological needs support, autonomous motivation, and intention at baseline, and at the 2nd and 4th month. Factorial, convergent, discriminant, concurrent, predictive, ecological validity and test-retest reliability of the RAI were tested via exploratory factor analysis (EFA), confirmatory factor analysis (CFA), and structural equation modelling (SEM). All the EFAs, CFAs, and SEMs yielded acceptable to excellent goodness-of-fit, Χ2 = 10.51 to 224.12, df = 9 to 161, CFI > 0.95, TLI > 0.95, RMSEA <0.09 [90%C I < 0.06 to 0.12], SRMR <0.04. Results fully supported the RAI's factorial, convergent, discriminant, and ecological validity, and test-retest reliability. The concurrent and predictive validity of the RAI was only partially supported because the RAI scores at baseline was positively associated with rehabilitation frequency at all time points (r = 0.34 to 0.38, p < 0.001), but its corresponding associations with rehabilitation duration were not statistically significant (p = 0.07 to 0.93). Overall, our findings suggest that this six-item RAI is a reliable and valid tool for evaluating patients' rehabilitation adherence. [ABSTRACT FROM AUTHOR]