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January 2012 Volume 15 Number 1 - Educational Technology ...

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As the original and modified models were in a hierarchical relationship, chi-square statistic was used to examine the<br />

statistical difference between the two models. The absence of any significant difference between the two models in<br />

terms of the goodness of fit (χ 2 D=5.06, p=.08) confirmed the modified structural model as the final research model.<br />

Table 5 presents the goodness of fit indices for the modified model, indicating that the model exhibited a good fit<br />

(TLI=1.006; CFI=1.000; RMSEA=.000). Although the CMIN value of the modified structural model was 1.52 larger<br />

than that of the initially hypothesized model, the difference was not significant as mentioned above. The<br />

standardized path coefficients of the modified model are shown in Figure 4.<br />

Table 5. Fit statistics for the structural model (modified)<br />

CMIN<br />

(χ 2 )<br />

p df TLI CFI<br />

RMSEA<br />

(90% confidence interval)<br />

Structural model (modified) 28.03 .713 33 1.006 1.000<br />

.000<br />

(.000~.036)<br />

Hypothesized model<br />

Note: n=248<br />

26.51 .696 31 1.005 1.000<br />

.000<br />

(.000~.038)<br />

e1<br />

e2<br />

e3<br />

e4<br />

e5<br />

e6<br />

e7<br />

e8<br />

ASE1<br />

ASE2<br />

IV1<br />

IV2<br />

TA1<br />

TA2<br />

Easy<br />

Useful<br />

.90<br />

Self<br />

Efficacy<br />

.87<br />

.92<br />

Intrinsic<br />

Value<br />

.85<br />

.81<br />

Test<br />

Anxiety<br />

.93<br />

.94<br />

Usefulness<br />

Ease of use<br />

.78<br />

.76<br />

-.39<br />

-.21<br />

.21<br />

.20<br />

-.40<br />

.47<br />

.40<br />

.38<br />

.97<br />

e9<br />

FL1<br />

-.14<br />

.20<br />

Flow<br />

.17<br />

e10<br />

Figure 4. Modified model with standardized path coefficients<br />

FL2<br />

.82<br />

z1<br />

z2<br />

Achievement<br />

The direct effects among the variables included in the modified model were tested (See Table 6). First, the effects of<br />

self-efficacy, intrinsic value, and perceived usefulness and ease of use on learning flow were investigated<br />

respectively. The effect of self-efficacy on learning flow was β =.205(t= 2.216, p

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