Attitudes about Instrumental Driving Aggression Scale

Attitudes about Instrumental Driving Aggression Scale

Description

The Attitudes about Instrumental Driving Aggression Scale (Love, Indrawan, & Larue, 2024) was developed to assess problematic attitudes toward instrumental aggressive driving behaviors. This six-item scale evaluates beliefs supporting speeding under specific conditions, particularly when it is perceived as beneficial for traffic flow. These attitudes align with instrumental forms of driver aggression identified in prior research (Love et al., 2023) and draw on concepts from the speeding attitude scale by Ulleberg and Rundmo (2002). The scale was validated using data from Australian adult drivers, with factor analysis supporting a single-factor structure. Reliability and validity evidence was reported.

Author

• Steven Love (University of the Sunshine Coast, MAIC/UniSC Road Safety Research Collaboration) – ORCID: 0000-0002-2183-4464
• Yolinda Indrawan (University of the Sunshine Coast, School of Health)
• Grégoire S. Larue (University of the Sunshine Coast, MAIC/UniSC Road Safety Research Collaboration)

Purpose

This scale measures problematic attitudes toward instrumental aggressive driving behaviors.

Construct

Instrumental Driving Aggression Attitudes

Instrument Type

Rating Scale

Format

Responses are recorded on a five-point scale.

Administration Method

Electronic

Number of Items

6

Reliability

• Internal consistency: Cronbach’s alpha = 0.89

Validity

• Factorial validity: Factor analysis supports the structural validity of the measure.
• Convergent validity: Positive correlations were found between the Attitudes about Instrumental Driving Aggression Scale and the Aggressive Driving Style Questionnaire (ASDQ; Love, Indrawan, & Larue, 2024).

Factor Analysis

• Confirmatory Factor Analysis (CFA):
  • χ²(9) = 63.36, p < .001
  • Goodness of Fit Index (GFI) = 0.959
  • Tucker-Lewis Index (TLI) = 0.967
  • Comparative Fit Index (CFI) = 0.967
  • Root Mean Square Error of Approximation (RMSEA) = 0.107
  • Standardized Root Mean Square Residual (SRMR) = 0.033

Test Methodology

• Test Validity
• Convergent Validity
• Test Reliability
• Internal Consistency
• Factor Analysis
• Confirmatory Factor Analysis

Age Group

• Adulthood (18 years and older)
• Young Adulthood (18-29 years)
• Thirties (30-39 years)
• Middle Age (40-64 years)
• Aged (65 years and older)
• Very Old (85 years and older)

Population Group

• Human
• Male
• Female

Population Details

• Location: Australia
• Respondents: Adult Drivers
• Age Range: 18-89

Keywords

• Aggressive Driving Behaviors
• Instrumental Driving Aggression
• Problematic Attitudes

Index Terms

• Aggressive Driving Behavior
• Attitude Measures
• Drivers
• Highway Safety
• Human Factors Measures

Items of Attitudes about Instrumental Driving Aggression Scale

This scale assesses attitudes towards certain driving behaviors. Participants are asked to rate their agreement with each statement, indicating how much they agree with the presented attitudes. There are no right or wrong answers, and participants are encouraged to respond to all items.

Statements

The statements included in the scale are as follows:

1. It’s okay to speed if the traffic conditions allow you to do so.

2. If you have good driving skills, it is safe to drive above the speed limit in certain conditions.

3. If you are a safe driver, it is acceptable to slightly exceed the speed limit in built up areas.

4. Sometimes it is necessary to bend the rules to keep traffic going.

5. It is better to drive smoothly than always to follow the traffic rules.

6. Sometimes it is necessary to break the traffic rules in order to get ahead.

Scale

The rating scale used for each statement is presented in the following table:

Reference

Love, S., Indrawan, Y., & Larue, G. S. (2024). Development of a nuanced approach to aggressive driving: An investigation into the self-regulatory and attitudinal profiles of aggressive drivers and their contextual role in negative road interactions. Transportation Research Part F: Traffic Psychology and Behaviour, 102, 142–154. https://doi.org/10.1016/j.trf.2024.02.012