Conditioning of electrodermal responses through vicarious instigation and through perceived threat to a performer

Abstract.— In order to demonstrate vicarious classical conditioning, and to investigate the necessity of vicarious instigation for vicarious conditioning of skin conductance responses, two groups of 32 students each observed a performer ( P ) allegedly trying to solve easy and difficult number series displayed for both the P and the observers ( Os ). Difficult problems served as CS+ and easy ones as CS-for os in both groups; indicated shock to the P as unconditioned stimulus (UCS) for one group, and perceived threat of shock to P as UCS for the other. Within the two groups half of the os were instructed to empathize with the P , whereas the other half was instructed just to watch her movements. The results demonstrated vicarious instigation and conditioning for the group having indicated shock as UCS, and conditioning without instigation for the group having perceived threat of shock as UCS. Since results for the conditioned response and the vicariously instigated response go beyond earlier interpretations, a theoretical elaboration in the cognitive direction is argued for.     

Social pressure and policy change in the "lens model" interpersonal conflict paradigm

Abstract.— The effects of conflict and policy inaccuracy on policy change in the "lens model" interpersonal conflict paradigm were investigated in an experiment which compared amount of policy change for subjects who were paired with a stooge who did not change his policy even though it was incorrect with the amount of policy change for subjects whose opponents changed their policies to reduce the inaccuracy of these policies. The amount of policy change was the same in both of these conditions, indicating that task adaptation is a more important goal to the subjects than conflict reduction in these experiments.     

Differentiation between vicarious instigation and classical conditioning of electrodermal responses

In past research of vicarious conditioning when a conditioned stimulus (CS) was repeatedly presented both to a model and an observer, the observer's reaction to the CS may have been the result of a vicariously conditioned reaction to the CS, as well as a vicariously instigated reaction to the inferred emotional state of the model who anticipates the reception of a noxious stimulus when the CS is presented. In order to partial out these two reactions, the present experiment employed 32 subjects of both sexes who took part in a two-group study of differential, vicarious classical conditioning of skin conductance responses. In one of the group, the tones serving as CS+ and CS- and which preceded the aversive and non aversive events to the mode, were presented over earphones to both the confederate model and the observer subject. In the second group, only the subjects had earphones on and were led to believe that the model was not aware of the CS presentations. This eliminated the possibility of vicariously instigated reactions. Although the conditioning effects produced in the present study were somewhat weak, results clearly showed equal levels of vicarious instigation and conditioning in the two groups. These results indicate that the potential confounding of these two reactions studies has not significantly affected result or conclusions from previous studies.     

The relation of vicarious to direct instigation and conditioning of electrodermal responses

Abstract.— Three groups with 16 Ss each and run in pairs, participated in a differential, successive components, long interstimulus interval conditioning paradigm with the skin conductance response as dependent variable. For the problem solving group the task was described as guessing which of two lamps (CS₂s) would follow after two different tones (CS₁s). In the observer group they were further informed that the other subject in the pair, the model, would receive shocks at CS+ offset, which actually was the case for the model group. Skin conductance responses were scored in five intervals during and after the non-overlapping presentation of the two CSs with a duration of 8 sec each. The results indicated no differentiation in any interval for the problem-solvers, and parallel instigation to shock and threat of shock, and conditioning in the observer and model groups, with the exception of conditioning in the 1st interval for observers only. The results were interpreted as parallel instigation and conditioning between vicarious and direct learning, the reported difference being due only to different UCS-intensities causing a blocking of first-order conditioning in the model but not in the observer group.     

The observer's acquaintance with the model's stimulus in vicarious classical conditioning

To disentangle possibel mediating mechanisms in vicarious learning, the observer's acquaintance with an annoying stimulus was varied before taking part in a classical conditioning procedure where the model ostensible received strong electric shocks. For a total 64 observers of both sexes the pre-conditioning acquaintance was varied in a 2times2 factorial design with Intensity (strong/week) and Modality (shock/tone) as independent variables. In the differential long interstimulus interval conditioning procedure, skin conductance responses (SCRs) were employed as the main dependent measure, and were supplemented by post-experimental questionnaire ratings. Data analyses indicated that the observers with a weak intensity of pre-experimental acquaintance conditioned SCRs better than those with a strong intensity, which was contrary to hypotheses. For the post-experimental ratings no such effect was indicated. The results are discussed in terms of the observer's perceived self-suffering to the model's stimulus and the intensity of the model's emotional state as perceived by the observer. It is argued that the groups with a strong intensity of pre-experimental discomfort preceived the model's emotional state as less intense than the groups who had encountered a weak intensity stimulus.