20190926_04084041.pdf - and Two Items Scenario One Scenario...

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and Two Items Scenario One Scenario Two Factor One Factor One Loading Loading a) What an idiot! .898 .919 b) How did that fool get his licence! .880 .918 c) That idiot shouldn’t be allowed on the .541 .623 road! Cronbach’s α .81 .84 The exploratory factor analysis procedure was repeated with participant responses to Scenario Two, yielding comparable results. Again, the principal axis factoring Psychosocial Characteristics of Aggressive Drivers 182 revealed one factor (eigenvalue = 2.334) explaining 69% of the variance in this factor, Cronbach’s α = .84. It should be noted, however, that deletion of the first item ‘What an idiot!’, resulted in a higher reliability estimate in response to Scenario One and Scenario Two (α = .88 and α = .91 respectively). However, this item was retained in the calculation of average scores of negative cognition in response to Scenarios One and Two, since the original Cronbach’s α’s were considered adequate. Behavioural Responses The factor analysis of the behavioural measure, designed specifically for this study, not only examined the structure of the measure, but was also relevant to the following hypotheses: H9 The response of drivers to a provocative on-road incident can be categorised into two types of behaviours, instrumental or hostile. These types of behaviours will serve different functions for drivers. The nine reactive aggressive behaviours detailed in Section were used in the following factor analyses (refer to Table 5.8). As previously noted, items three and seven did not involve the adoption of a potentially aggressive behavioural response and were thus excluded from the factor analysis procedure. Examination of the resultant scree plot in conjunction with principal components analysis, revealed two factors with an eigenvalue > 1, explaining 59% of the variance in these two factors (Factor One, eigenvalue = 3.612 and Factor Two, eigenvalue = 1.684).
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