Susceptibility to Driver Distraction Questionnaire – SDDQ
Measures a driver's self-reported engagement in distracting activities, attitudes and beliefs about voluntary distraction, and susceptibility to involuntary distraction.
33 Questions
~8 min
Custom
Scale Development & Technical Details
Scale Overview
The Susceptibility to Driver Distraction Questionnaire – SDDQ was developed by Jing Feng, Susana Marulanda, Birsen Donmez (2014). It is designed to measure Driver Distraction Susceptibility. The scale is intended for use with Drivers.
Scale Structure
This instrument consists of 33 items organized into 5 factors/subscales: Distraction Engagement, Attitude toward Voluntary Distraction, Perceived Control, Perceived Social Norms, Susceptibility to Involuntary Distraction.
Factor / Subscale
Items
N
Distraction Engagement
1,2,3,4,5,6,7
7
Attitude toward Voluntary Distraction
8,9,10,11,12,13
6
Perceived Control
14,15,16,17,18,19
6
Perceived Social Norms
20,21,22,23,24,25
6
Susceptibility to Involuntary Distraction
26,27,28,29,30,31,32,33
8
Response Format
Respondents rate each item using a custom response format.
Items are scored by subscale, with each subscale sum representing a distinct dimension.
Total scores range from 0 to 100. Interpretation guidelines:
Scores should be calculated and interpreted independently for each subscale.: 0 – 100
Psychometric Properties
Internal Consistency: The scale has demonstrated good to excellent internal consistency with reported Cronbach’s alpha values of Engagement (0.66); Attitude (0.67); Perceived control (0.80); Perceived norms (0.73 – 0.81); Involuntary (0.69).
Administration
The scale is self-administered and typically takes approximately 10 minutes to complete. It can be administered individually or in group settings. No special training is required for administration.