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Temporal Measurement Invariance
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- Structural Models and Tests of the Hypotheses
Temporal Measurement Invariance
Based on the CFA results, measurement invariance of the 15-factor model over time was then examined by comparing the model with free loadings against the model with loadings of each indicator constrained to equality over time. If the constrained model does not fit worse than the unconstrained model, then metric invariance is empirically justified and indicates that the latent constructs maintain the same meanings across time (Schmitt & Kuljanin, 2008). Fit indices of the 15-factor model with longitudinal constraints on factor loadings across all three times are shown in Table 3 and were compared with those of the unconstrained model with free loadings. The chi-square difference test was significant between the unconstrained model and the model in which loadings were constrained to equality across all three times (Δχ 2 (28) = 74.90, p < .01). Previous research has argued against the heavy reliance on the significance of chi-square tests when comparing different models (Schmitt & Kuljanin, 2008); instead, CFI has been suggested as the best index for change in model fit and that a difference in CFI smaller than or equal to .01 was considered as the criterion to indicate invariance (Cheung & Rensvold, 2002). Chen (2007) suggested pairing the criterion of a .01 difference in CFI with differences in RMSEA of .015 and SRMR of .03, and the null hypothesis of invariance rejected when differences in fit exceeded these criteria. As shown in Table 3, the parsimonious constrained model did not fit worse than the unconstrained model. Thus, metric invariance was suggested for the 15-factor model. Given this, we chose to move forward with the more parsimonious constrained model. Structural Models and Tests of the Hypotheses Latent cross-lagged panel models were then built to test for longitudinal bi-directional relationships between JI and work behaviors. Autoregressive paths were included in order to JOB INSECURITY AND JOB PRESERVATION 15 control for baseline levels for each factor. Since reversed causality should be considered within full longitudinal panel designs (Zapf et al., 1996), causal effects and potential reversed effects were tested simultaneously in the bi-directional model. In line with previous research (e.g., Meier & Spector, 2013), to test a more parsimonious and conservative model, we constrained the path coefficients (autoregressive and cross-lagged coefficients) to be equal across all time points. Synchronous correlations were specified between constructs measured at the same time point. This latent cross-lagged panel model had a reasonable fit (χ 2 (1439) = 3148.15, BIC = 53910.79, CFI = .90, RMSEA = .057, SRMR = .072). Estimates of path coefficients are in Figure 1. -------------------------- Insert Figure 1 about here -------------------------- Most of the cross-lagged paths of causal effects and reversed effects were significant, except for the bi-directional relationships between job performance and JI. The lagged relationships between JI and subsequent self-presentation ingratiatory behavior ( ! = 0.09, SE = 0.03, p < .01) and knowledge hiding ( ! = 0.40, SE = 0.05, p < .01) were significant, supporting Hypotheses 1c and 1d. JI was positively associated with subsequent counterproductive work behavior (b = 0.39, SE = 0.03, p < .01), counter to our prediction in Hypothesis 1b. Regarding the reversed effects described in Hypothesis 2, knowledge hiding behavior was negatively related to subsequent JI ( ! = -0.19, SE = 0.04, p < .01), while counterproductive work behavior was positively related to subsequent JI ( ! = 0.47, SE = 0.07, p < .01). This supports Hypotheses 2c and 2d. Although self-presentation ingratiatory behavior also predicted subsequent JI, this relationship was positive ( ! = 0.36, SE = 0.09, p < .01), counter to Hypothesis 2b. Download 0.9 Mb. Do'stlaringiz bilan baham: |
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