The present study employs the Partial Least Square-Structural Equation Modelling (PLS-SEM) technique, a variance-based technique capable of predicting the hypothesised relationships from the data more robustly than the conventional SEM (Hair, Hult, Ringle, & Sarstedt, 2016). In addition, PLS-SEM works well with small sample sizes by computing measurement and structural model relationships separately instead of simultaneously (Hair, Risher, Sarstedt, & Ringle, 2019). Based on the recommendations by Hair et al. (2016), the PLS-SEM is applied in a two-stepped approach, including assessing measurement model and structural model.
5.1 Measurement model
In the measurement model, the outer model is assessed, including the evaluation of convergent validity and discriminant validity.
5.1.1 Convergent validity
Convergent validity is ensured when the measuring items of a construct show a level of relatedness, forcing them to make a construct (Waqas, 2021). For that, Hair et al. (2016) suggested the threshold value of greater than 0.7 for factor loadings and composite reliability, whereas, for average variance extracted (AVE), the threshold value is greater than 0.5. The results reported to meet all of the aforementioned criteria and summarised in Table 3.
Table 3 Convergent validity
Factors
|
Items
|
Loadings
|
Composite Reliability
|
Average Variance Extracted (AVE)
|
Conscious Attention (CA)
|
CA1
|
0.829
|
0.896
|
0.741
|
CA2
|
0.892
|
CA3
|
0.862
|
Continuance Intention (CI)
|
CI1
|
0.901
|
0.941
|
0.801
|
CI2
|
0.873
|
CI3
|
0.873
|
CI4
|
0.931
|
Enthused Participation (EP)
|
EP1
|
0.814
|
0.927
|
0.761
|
EP2
|
0.893
|
EP3
|
0.915
|
EP4
|
0.864
|
Perceived Ease of Use (PEOU)
|
PEOU1
|
0.896
|
0.855
|
0.664
|
PEOU2
|
0.773
|
PEOU3
|
0.768
|
Perceived Usefulness (PU)
|
PU1
|
0.832
|
0.839
|
0.637
|
PU2
|
0.677
|
PU3
|
0.871
|
Social Connection (SC)
|
SC1
|
0.886
|
0.913
|
0.778
|
SC2
|
0.903
|
SC3
|
0.856
|
5.1.2 Discriminant validity
Discriminant validity is ensured when the measuring items of a construct show a level of distinguishability with the measuring items of another construct and force them to make a respective construct (Waqas, 2021). In this study, it has been assessed by two measures. Firstly, the Fornell and Larcker (1981) according to which the square root of AVE should be exceeding from the values of inter-construct correlations. The results reported to meet the Fornell-Larcker Criterion and summarised in Table 4.
Table 4 Fornell-Larcker criterion
|
CA
|
CI
|
EP
|
PEOU
|
PU
|
SC
|
CA
|
0.861
|
|
|
|
|
|
CI
|
0.668
|
0.895
|
|
|
|
|
EP
|
0.709
|
0.687
|
0.872
|
|
|
|
PEOU
|
0.265
|
0.449
|
0.352
|
0.815
|
|
|
PU
|
0.499
|
0.575
|
0.477
|
0.287
|
0.798
|
|
SC
|
0.535
|
0.593
|
0.556
|
0.380
|
0.365
|
0.882
|
Note: the diagonal bold and italic values represent square root of AVE and off-diagonal values represents inter-construct correlations; CA: Conscious attention; CI: Continuance intention; EP: Enthused participation; PEOU: Perceived Ease of Use; PU: Perceived usefulness; SC: Social connection
The second measure to assess the discriminant validity is the Heterotrait-Monotrait Ratio (HTMT) which is comparatively a newly proposed criterion by Henseler, Ringle, and Sarstedt (2015). The threshold value of HTMT is less than 0.85, which in the present study is met, thus confirming the discriminant validity. The results are summarised in Table 5.
Table 5 Heterotrait-Monotrait Ratio (HTMT)
|
CA
|
CI
|
EP
|
PEOU
|
PU
|
SC
|
CA
|
|
|
|
|
|
|
CI
|
0.763
|
|
|
|
|
|
EP
|
0.830
|
0.752
|
|
|
|
|
PEOU
|
0.328
|
0.532
|
0.424
|
|
|
|
PU
|
0.623
|
0.686
|
0.560
|
0.366
|
|
|
SC
|
0.627
|
0.658
|
0.622
|
0.448
|
0.459
|
|
Note: CA: Conscious attention; CI: Continuance intention; EP: Enthused participation; PEOU: Perceived Ease of Use; PU: Perceived usefulness; SC: Social connection
5.2 Structural model
This includes assessing the inner model in which the predictive relevancy of the model and hypothesis testing are assessed.
5.2.1 Predictive relevancy
This shows the overall ability of the model to predict and estimate the dependent variable. The higher level of prediction relevancy indicates a higher level of quality that a model possesses. The predictive relevancy and accuracy are assessed by the coefficient of determination R2 and cross-validated redundancy Q2. For R2 the value close to 0.26 is considered strong (Cohen, 1988), whereas, for Q2, the value should be above 0 (Hair et al., 2016). The results summarised in Table 6 show the quality, predictive accuracy and relevancy of the structural model.
Table 6 Predictive power of the construct
|
R-Square
|
Q-Square
|
CA
|
0.265
|
0.180
|
CI
|
0.577
|
0.427
|
EP
|
0.278
|
0.196
|
SC
|
0.216
|
0.148
|
Note: CA: Conscious attention; CI: Continuance intention; EP: Enthused participation; SC: Social connection
5.2.2 Hypothesis testing
Based on the hypothesised relationships, perceived usefulness was found to be the highest predictor of conscious attention (β=0.460, p < 0.01) followed by the enthused participation (β=0.410, p < 0.01), and the social connection (β=0.282, p < 0.01). Considering perceived ease of use, it was found to be the highest predictor of the social connection (β=0.304, p < 0.01), followed by the enthused participation (β=0.237, p < 0.01) and the conscious attention (β=0.136, p < 0.05). On the other hand, while predicting the conscious attention, the enthused participation was found to be the highest predictor (β=0.345, p < 0.01) followed by the conscious attention (β=0.293, p < 0.01) and lastly, the social connection (β=0.244, p < 0.01). All of the hypotheses were found statistically significant and positive in nature. The results are summarised in Table 7.
Table 7 Hypothesis testing
No.
|
Hypotheses
|
Path Coefficients
|
Standard Deviation
|
T Statistics
|
P Values
|
Remarks
|
H1
|
PU → CA
|
0.460
|
0.057
|
8.133
|
0.000
|
Supported
|
H2
|
PU → EP
|
0.410
|
0.060
|
6.789
|
0.000
|
Supported
|
H3
|
PU → SC
|
0.282
|
0.068
|
4.111
|
0.000
|
Supported
|
H4
|
PEOU → CA
|
0.136
|
0.064
|
2.088
|
0.037
|
Supported
|
H5
|
PEOU → EP
|
0.237
|
0.065
|
3.601
|
0.000
|
Supported
|
H6
|
PEOU → SC
|
0.304
|
0.066
|
4.535
|
0.000
|
Supported
|
H7
|
CA → CI
|
0.293
|
0.077
|
3.838
|
0.000
|
Supported
|
H8
|
EP → CI
|
0.345
|
0.078
|
4.371
|
0.000
|
Supported
|
H9
|
SC → CI
|
0.244
|
0.069
|
3.524
|
0.000
|
Supported
|
Note: CA: Conscious attention; CI: Continuance intention; EP: Enthused participation; PEOU: Perceived ease of use; PU: Perceived usefulness; SC: Social connection