Diagnosticity in Personnel Selection: Effects of the Big Two on Sampling and Judgement Behaviour
Mon-B16-Talk I-02
Presented by: Johannes Prager
In a series of person impression formation experiments, we confirmed the systematic impact of diagnosticity on sampling and judgement behaviour. When forming impressions on target individuals and groups from trait words, the required number of words (sample size) and the strength of the resulting impression are both a function of input valence, extremity and stimulus density (i.e. the multi-dimensional distance between sampled traits).
We transferred this diagnosticity perspective to a personnel selection paradigm, where participants were instructed to form an impression on a target applicant characterised by their behaviour in an assessment centre. We systematically presented target behaviours according to the big two (agency vs. communion) and valence (positive vs. negative behaviours). We found evidence for an interdependent impact of the big two and valence on sampling and judgement behaviour. Candidates characterized by negative communion and positive agency behaviours were judged more strongly and confidently and samples were stopped earlier compared to positive communion and negative agency behaviours. In addition, the target job profile was adjusted to either require an agentic or a communal profile. Fit of behaviours to profile predicted sampling and judgement behaviour as well.
In different paradigms, we found evidence for diagnosticity effects, which systematically depend on the task (question asked/ hypothesis tested) and the information environment (density/frequency structure in a typical environment).
We transferred this diagnosticity perspective to a personnel selection paradigm, where participants were instructed to form an impression on a target applicant characterised by their behaviour in an assessment centre. We systematically presented target behaviours according to the big two (agency vs. communion) and valence (positive vs. negative behaviours). We found evidence for an interdependent impact of the big two and valence on sampling and judgement behaviour. Candidates characterized by negative communion and positive agency behaviours were judged more strongly and confidently and samples were stopped earlier compared to positive communion and negative agency behaviours. In addition, the target job profile was adjusted to either require an agentic or a communal profile. Fit of behaviours to profile predicted sampling and judgement behaviour as well.
In different paradigms, we found evidence for diagnosticity effects, which systematically depend on the task (question asked/ hypothesis tested) and the information environment (density/frequency structure in a typical environment).
Keywords: diagnosticity, sampling, impression formation