score of 0.67. Therefore, both the construct reliability coefficients and the composite reliability coefficients show acceptable convergent validity.
Table 4.1: Construct reliability and convergent validity of the reflective scales. Constructs
Indicators Buyer and Supplier Buyer Supplier
Table 4.2: Convergent validity of the formative scales. Constructs
Indicators Buyer and Supplier Buyer Supplier
Indicator
Weights: p-value: VIF:
Indicator
Weights: p-value: VIF:
Indicator
Weights: p-value: VIF:
Table 4.4: Squared roots of the average variance extracted (AVE) and correlation matrix (second-order constructs) Now that the measures have been tested for the ‘buyer only’, ‘supplier only’, and the buyer and supplier datasets, it can be concluded that the measurement model is strong enough to test the devised structural model. 4.5 Structural Model In order to see if the structural models should be analysed separately for buyers and suppliers, a paired sample t-test was performed in SPSS. The results of this test are listed in Table 4.5. For the Levene’s test there is only a significant difference in variance for information sharing amongst buyers and suppliers. The t-statistics show that buyers and suppliers perceive information sharing and exploitative learning equally. For all the other variables we see that the suppliers have significantly higher scores. As the scores for buyers and suppliers do in fact differ, so might the relationships. This calls for a separation between buyers and suppliers in the structural model. Table 4.5: Paired sample T-test between buyer and supplier scores.
Buyers Suppliers t-value: (of differences) t-value: (2-tailed) Levene statistic: p-value: (2-tailed) Mean St.dev. Mean: St.dev.
Table 4.7: Overview of hypothesis for buyers and suppliers. Dependent
Independent Hypothesis Buyer Supplier
Info Sharing
PACAP H1a part. sup. rej.
RACAP H1b rej. rej.
Flexibility
PACAP H2a rej. rej.
RACAP H2b rej. part. sup.
Solidarity
PACAP H3a part. sup. rej.
RACAP H3b rej. rej.
PACAP - Flexibility Relationship Duration H4a rej. rej. RACAP - Flexibility Relationship Duration H4b rej. rej. Exploratory Performance
Info Sharing H5a rej. rej.
Flexibility H6a rej. sup.
Solidarity H7a sup. rej.
Exploitative Performance
Info Sharing H5b sup. sup.
Flexibility H6b rej. rej.
Solidarity H7b sup. sup.
Note: sup. = supported; part. sup. = partially supported; part. rej. = partially rejected; rej. = rejected.
