The ZKPQ consists of 99 items measuring five basic dimensions of personality. It contains an additional Infrequency (Infreq) scale that allows eliminating participants with careless responding. The response sentence format is dichotomous with a true–false response set. The personality dimensions measured are: Neuroticism-Anxiety (N-Anx), Activity (Act), Sociability (Sy), Impulsive Sensation Seeking (ImpSS), and Aggression-Hostility (Agg-Host).(AggHost).




Neuroticism-Anxiety (N-Anx, 19 items). This scale describes frequent emotional upset, tension, worry, fearfulness, indecision, lack of self-confidence, and sensitivity to criticism.

Activity (Act, 17 items). This scale is divided into two subscales: General Activity, describes the need for general activity, an inability to relax and do nothing when the opportunity arises, and, Work Effort, refers to a preference for hard and challenging work, an active, busy life and a high energy level.

Sociability (Sy, 17 items). This scale also contains two subscales: Parties and Friends describes the number of friends one has, the amount of time spent with them and outgoingness at parties. Isolation Intolerance includes items regarding the preference for being with others as opposed to being alone and engaging in solitary activities.

Impulsive Sensation-Seeking (ImpSS, 19 items). The first subscale, Impulsivity, involves a lack of planning and the tendency to act impulsively without thinking. The second, Sensation Seeking, describes the seeking of excitement, novel experiences, and the willingness to take risks for the sake of these types of experiences. The ImpSS items are general in content and do not describe specific activities such as drinking or sex.

Aggression-Hostility (Agg-Host, 17 items). It describes a readiness to express verbal aggression, rude, thoughtless, or antisocial behaviour, vengefulness and spitefulness, having a quick temper and impatience with others.

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