Item Deleted Cronbach's Case Study

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Table 4.4 The Reliability of the Instrument
Constructs Items Corrected
Item-total Correlation Alpha if Item Deleted Cronbach's Alpha Value of the Constructs
Parents' Attitude toward FB A1 .890 .920 .942 A2 .775 .940 A3 .853 .927 A4 .848 .928 A5 .855 .927
Parents’ Subjective Norm of FB SN1 .865 .930 .945 SN2 .834 .936 SN3 .865 .930 SN4 .904 .923 SN5 .788 .944
Parents’ Perceived Behavioral Control of FB PBC1 .896 .935 .952 PBC2 .896 .935 PBC3 .913 .933 PBC4 .833 .946 PBC5 .800 .952
Parents’ Perceived Usefulness of FB PU1 .797 .924 .934 PU2 .850 .914 PU3 .748 .933 PU4 .869 .911 PU5 .863 .912
Parents’ Perceived Ease of Use of FB PEOU1 .863 .941 .952 PEOU2 .891 .937 PEOU3 .919 .931 PEOU4 .830 .947 PEOU5 .834 .946
Parents’ Perceived Playfulness concerning FB PP1 .824 .913 .934 PP2 .838 .908 PP3 .854 .905 PP4 .865 .903
Parents’ Perceived Risk of FB PR1 .755 .866 .893 PR2 .692 .880 PR3 .690 .880 PR4 .810 .852 PR5 .742 .868
Parents' Behavioral Intention of FB BI1 .861 .922 .940 BI2 .864 .922 BI3 .863 .922 BI4 .824 .929
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The lowest limit of KMO value is .5, and values between .5 and .7 are mediocre, values between .7 and .8 are middling, values between .8 and .9 are meritorious and values above .9 are marvelous (Field, 2009). In the pretest, the value of KMO was .855 which suggested that the sample size was adequate for factor analysis. Furthermore, the value of Bartlett’s test showed that the inter-independent of the measurement of each construct was highly significant (p < .001). Therefore, the instrument of high reliability was appropriate to perform the factor analysis (Field, 2009). For the testing results of KMO and Bartlett’s measure, please refer to Table

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