Charlotte Bonardi - Academia.edu (original) (raw)

Uploads

Papers by Charlotte Bonardi

Research paper thumbnail of Negative priming and occasion setting in an appetitive Pavlovian procedure

Rats received training in which two auditory target stimuli, X and Y, were signaled by two visual... more Rats received training in which two auditory target stimuli, X and Y, were signaled by two visual stimuli, A and B, and followed by food (i.e., A®X1, B®Y1). The test consisted of presentations of X and Y preceded either by the same signal as during training (same trials: A®X, B®Y ) or by the alternative signal (different trials: A®Y, B®X). After 8 training sessions, the animals responded less on same trials than on different trials; this effect was significantly reduced after 24 training sessions. In two additional experiments, animals that had also experienced presentations of A and B alone, either before or during training, showed the opposite pattern of results, responding more on same trials than on different trials. These results are interpreted as being due to the interaction between the effects of occasion setting and negative priming (see .

Research paper thumbnail of Analysis of the learned irrelevance effect in appetitive Pavlovian conditioning

Quarterly Journal of Experimental Psychology Section B-comparative and Physiological Psychology, 2005

In Experiments 1 and 2 rats received uncorrelated presentations of a light conditioned stimulus (... more In Experiments 1 and 2 rats received uncorrelated presentations of a light conditioned stimulus (CS) and a food unconditioned stimulus (US) on each day of a preexposure phase. Control subjects received the same number of USs during the first half of preexposure and the same number of CSs during the second. Uncorrelated preexposure retarded inhibitory conditioning. Experiment 3 showed, however,

Research paper thumbnail of Acquired distinctiveness and equivalence in human discrimination learning: evidence for an attentional process

Psychonomic bulletin & review, 2005

In a first stage of training, participants learned to associate four visual cues (two different c... more In a first stage of training, participants learned to associate four visual cues (two different colors and two different shapes) with verbal labels. For Group S, one label was applied to both colors and another to both shapes; for Group D, one label was applied to one color and one shape, and the other label to the other cues. When subsequently required to learn a task in which a given motor response was required to one of the colors and one of the shapes, and a different response to the other color and the other shape, Group D learned more readily than Group S. The task was designed so that the associations formed during the first stage of training could not generate differential transfer to the second stage. The results are consistent, however, with the proposal that training in which similar cues are followed by different outcomes will engage a learning process that boosts the attention paid to features that distinguish these cues.

Research paper thumbnail of Context specificity of conditioning in flavor-aversion learning: Extinction and blocking tests

Animal Learning & Behavior, 1990

In three experiments using rats as subjects, we investigated the degree to which a conditioned fl... more In three experiments using rats as subjects, we investigated the degree to which a conditioned flavor aversion transfers from one context to another. Experiment 1, using a one-trial conditioning procedure, found no effect of a change of context on a conditioned aversion. Experiment 2 employed a multitrial procedure and demonstrated that a conditioned aversion was extinguished more rapidly after a change of context. Experiment 3 showed that context change decreased the effectiveness with which a conditioned flavor could block acquisition of an aversion by a second flavor. It is argued that these data cannot be explained in associative terms, and that they constitute evidence of conditionality in a simple aversive conditioning procedure.

Research paper thumbnail of Negative priming and occasion setting in an appetitive Pavlovian procedure

Animal Learning & Behavior, 2003

Rats received training in which two auditory target stimuli, X and Y, were signaled by two visual... more Rats received training in which two auditory target stimuli, X and Y, were signaled by two visual stimuli, A and B, and followed by food (i.e., A®X1, B®Y1). The test consisted of presentations of X and Y preceded either by the same signal as during training (same trials: A®X, B®Y ) or by the alternative signal (different trials: A®Y, B®X). After 8 training sessions, the animals responded less on same trials than on different trials; this effect was significantly reduced after 24 training sessions. In two additional experiments, animals that had also experienced presentations of A and B alone, either before or during training, showed the opposite pattern of results, responding more on same trials than on different trials. These results are interpreted as being due to the interaction between the effects of occasion setting and negative priming (see .

Research paper thumbnail of SSCC TD: A Serial and Simultaneous Configural-Cue Compound Stimuli Representation for Temporal Difference Learning

PLoS ONE, 2014

This paper presents a novel representational framework for the Temporal Difference (TD) model of ... more This paper presents a novel representational framework for the Temporal Difference (TD) model of learning, which allows the computation of configural stimuli -cumulative compounds of stimuli that generate perceptual emergents known as configural cues. This Simultaneous and Serial Configural-cue Compound Stimuli Temporal Difference model (SSCC TD) can model both simultaneous and serial stimulus compounds, as well as compounds including the experimental context. This modification significantly broadens the range of phenomena which the TD paradigm can explain, and allows it to predict phenomena which traditional TD solutions cannot, particularly effects that depend on compound stimuli functioning as a whole, such as pattern learning and serial structural discriminations, and context-related effects.

Research paper thumbnail of Negative priming and occasion setting in an appetitive Pavlovian procedure

Rats received training in which two auditory target stimuli, X and Y, were signaled by two visual... more Rats received training in which two auditory target stimuli, X and Y, were signaled by two visual stimuli, A and B, and followed by food (i.e., A®X1, B®Y1). The test consisted of presentations of X and Y preceded either by the same signal as during training (same trials: A®X, B®Y ) or by the alternative signal (different trials: A®Y, B®X). After 8 training sessions, the animals responded less on same trials than on different trials; this effect was significantly reduced after 24 training sessions. In two additional experiments, animals that had also experienced presentations of A and B alone, either before or during training, showed the opposite pattern of results, responding more on same trials than on different trials. These results are interpreted as being due to the interaction between the effects of occasion setting and negative priming (see .

Research paper thumbnail of Analysis of the learned irrelevance effect in appetitive Pavlovian conditioning

Quarterly Journal of Experimental Psychology Section B-comparative and Physiological Psychology, 2005

In Experiments 1 and 2 rats received uncorrelated presentations of a light conditioned stimulus (... more In Experiments 1 and 2 rats received uncorrelated presentations of a light conditioned stimulus (CS) and a food unconditioned stimulus (US) on each day of a preexposure phase. Control subjects received the same number of USs during the first half of preexposure and the same number of CSs during the second. Uncorrelated preexposure retarded inhibitory conditioning. Experiment 3 showed, however,

Research paper thumbnail of Acquired distinctiveness and equivalence in human discrimination learning: evidence for an attentional process

Psychonomic bulletin & review, 2005

In a first stage of training, participants learned to associate four visual cues (two different c... more In a first stage of training, participants learned to associate four visual cues (two different colors and two different shapes) with verbal labels. For Group S, one label was applied to both colors and another to both shapes; for Group D, one label was applied to one color and one shape, and the other label to the other cues. When subsequently required to learn a task in which a given motor response was required to one of the colors and one of the shapes, and a different response to the other color and the other shape, Group D learned more readily than Group S. The task was designed so that the associations formed during the first stage of training could not generate differential transfer to the second stage. The results are consistent, however, with the proposal that training in which similar cues are followed by different outcomes will engage a learning process that boosts the attention paid to features that distinguish these cues.

Research paper thumbnail of Context specificity of conditioning in flavor-aversion learning: Extinction and blocking tests

Animal Learning & Behavior, 1990

In three experiments using rats as subjects, we investigated the degree to which a conditioned fl... more In three experiments using rats as subjects, we investigated the degree to which a conditioned flavor aversion transfers from one context to another. Experiment 1, using a one-trial conditioning procedure, found no effect of a change of context on a conditioned aversion. Experiment 2 employed a multitrial procedure and demonstrated that a conditioned aversion was extinguished more rapidly after a change of context. Experiment 3 showed that context change decreased the effectiveness with which a conditioned flavor could block acquisition of an aversion by a second flavor. It is argued that these data cannot be explained in associative terms, and that they constitute evidence of conditionality in a simple aversive conditioning procedure.

Research paper thumbnail of Negative priming and occasion setting in an appetitive Pavlovian procedure

Animal Learning & Behavior, 2003

Rats received training in which two auditory target stimuli, X and Y, were signaled by two visual... more Rats received training in which two auditory target stimuli, X and Y, were signaled by two visual stimuli, A and B, and followed by food (i.e., A®X1, B®Y1). The test consisted of presentations of X and Y preceded either by the same signal as during training (same trials: A®X, B®Y ) or by the alternative signal (different trials: A®Y, B®X). After 8 training sessions, the animals responded less on same trials than on different trials; this effect was significantly reduced after 24 training sessions. In two additional experiments, animals that had also experienced presentations of A and B alone, either before or during training, showed the opposite pattern of results, responding more on same trials than on different trials. These results are interpreted as being due to the interaction between the effects of occasion setting and negative priming (see .

Research paper thumbnail of SSCC TD: A Serial and Simultaneous Configural-Cue Compound Stimuli Representation for Temporal Difference Learning

PLoS ONE, 2014

This paper presents a novel representational framework for the Temporal Difference (TD) model of ... more This paper presents a novel representational framework for the Temporal Difference (TD) model of learning, which allows the computation of configural stimuli -cumulative compounds of stimuli that generate perceptual emergents known as configural cues. This Simultaneous and Serial Configural-cue Compound Stimuli Temporal Difference model (SSCC TD) can model both simultaneous and serial stimulus compounds, as well as compounds including the experimental context. This modification significantly broadens the range of phenomena which the TD paradigm can explain, and allows it to predict phenomena which traditional TD solutions cannot, particularly effects that depend on compound stimuli functioning as a whole, such as pattern learning and serial structural discriminations, and context-related effects.