Development and preliminary validation of the Penny Beliefs Scale – Weapons (PBS-W)

Weapons carrying and use is an area of increasing concern and frequent media attention. Despite this, there is a distinct lack of psychological research into the reasons that people carry and use weapons. At present there is no adequate measure of beliefs that facilitate carrying and using weapons and the present investigation sought to develop and validate such a tool: the Penny Beliefs Scale - Weapons (PBS-W). The PBS-W was developed using themes identified in a literature review and through consultation with experienced Forensic Psychologists. The factor structure, reliability, and validity were ascertained by administering the PBS-W to 212 school pupils in South Wales, who were aged between 16 and 18 years. The final version of the PBS-W comprises of 36 items that measure young people’s beliefs about carrying and using weapons and load onto one factor named Potency. The new scale has excellent internal reliability (Cronbach’s alpha of .92), extremely good test-retest consistency (ICC = .833), male participants scored significantly higher on the PBS-W compared with female participants, and the PBS-W is significantly positively correlated with self-reported delinquency. These findings are discussed in the context of existing literature and future potential directions for research are proposed.