Comparing positive and negative patterning in human learning

In human causal learning, positive patterning (PP) and negative patterning (NP) discriminations are often acquired at roughly the same rate, whereas PP is learned faster than NP in most experiments with nonhuman animals. One likely reason for this discrepancy is that most causal learning scenarios encourage participants to treat the presentation and omission of the relevant outcome as two events of comparable significance and likelihood. To investigate this, the current experiments compared PP and NP using a predictive learning paradigm based on a mock gambling task. In Experiment 1, one outcome (winning) was made more salient by being less frequent than the alternative outcome (losing). Under these circumstances, PP was learned faster than NP. In Experiment 2, subjects learned two PP and two NP discriminations, one involved win versus no change outcomes, the other involved lose versus no change outcomes. The subjects learned PP faster than NP, but only when discriminating win from no change. We argue that a difference in difficulty between PP and NP relies on a difference in the salience of the outcomes, consistent with the predictions of a relatively simple model of associative learning.     

“Toxin handling” and well-being: The case of the human resources manager

This study uses the job demands–resources model and multiple role theory to gain an understanding of the “toxin handling–well-being” relationship. “Toxin handlers” are empathetic managers willing to try to address pain and suffering in organizations (Frost, 2007). We use data from semistructured, in-depth interviews with HR managers to investigate the impact of the toxin handling role on well-being. The interviews indicate that toxin handling does not necessarily lead to the toxin handler’s ill health, because factors such as organizational and personal resources can influence that relationship. Further, toxin handlers can face very different toxin handling demands. These differences in the toxin handler’s resources and demands can lead to the full spectrum of possible health consequences of toxin handling (from decreased to enhanced health) for different toxin handlers.