The present series of experiments attempted to analyze more fully the contributions of stimulus-reinforcer and response-reinforcer relations to autoshaping within a single conditioning situation. (Author)

This article presents an analysis of the similarities between the stimulus familiarization effect and latent inhibition. (Editor)

Pairing a novel flavor with illness results in the conditioning of aversions to that flavor. This article reported a series of experiments examining the effect of several parameters of prior exposure to the illness on the acquisition of learned taste aversions. (Author/RK)

Does similarity in the location and temporal intensity pattern of the CS and UCS permit more rapid conditioning despite the presence of stimulus pairings in all groups? The following experiments attempt to assess the role of such factors in determining the rate of acquisition of a conditioned emotional response. (Author)

The experiments reported here describe the relationships between the reflex-modulating effects of compounded stimuli and the effects of these stimuli when they act in isolation. (Author)

While incentive contrast has been reliably demonstrated in single-response situations, tests for contrast-of-choice behavior have invariably failed to obtain the effect. Three experiments were reported that eliminated features of prior methodology which can mask the effect. (Editor/RK)

The present research evaluated the refractorylike response decrement, as found in habituation of auditory evoked peripheral vasoconstriction in rabbits, to determine whether or not it represents a short-term habituation process distinct from effector fatigue or sensory adaptation. (Editor)

Five experiments investigated the differential effects of shock punishment on nonconsummatory licking (dry licking) and lever pressing. Results support a motivationally based theory of punishment involving the role of incentive stimuli associated with the particular responses studied. (Editor/RK)

Three experiments are reported in which rats first received 50 escapable or inescapable signaled-shock trials. The results of the experiments are discussed in terms of a learned active-inactive predisposition to respond. (Editor/RK)

This article demonstrated that equations derived from Herrnstein's matching law can make quantitative predictions for many of the effects David Premack has studied on the relative nature of reinforcement. (Author/RK)

The purpose of the present study was to investigate interference in pigeon short-term memory using an intertrial interference paradigm. (Author)

This study provided added support for the generalization that the neural processes associated with the startle reflex are engaged by small changes in the auditory environment. They also pointed to a measure of separation between the processes responsible for inhibition and those responsible for latency shift. (Editor/RK)

Two experiments employing 180 rabbits and involving tone conditioned stimuli (CSs) and intraoral water unconditioned stimuli (UCSs) investigated pseudoconditioning of jaw movement. (Editor)

The major question of interest in the present investigation was whether or not a UCS is more effectively represented in STM when its occurrence is relatively surprising as opposed to expected. (Author)

The following series of experiments explores the question of whether the modality of the CS and the index used for conditioned drive are, in fact, important in demonstrating the conditioning of hunger, using natural deprivation as the UCS. (Author)