Research Repository

See what's under the surface


Associative mechanisms involved in specific Pavlovian-to-instrumental transfer (PIT) in human learning tasks (2018)
Journal Article
Alarcón, D., Bonardi, C., & Delamater, A. (in press). Associative mechanisms involved in specific Pavlovian-to-instrumental transfer (PIT) in human learning tasks. Quarterly Journal of Experimental Psychology, doi:10.1080/17470218.2017.1342671. ISSN 1747-0218

Four experiments compared the effect of forward and backward conditioning procedures on the ability of conditioned stimuli (CSs) to elevate instrumental responding in a Pavlovian-to-instrumental transfer (PIT) task. Two responses were each trained wi... Read More

The effects of stimulus distribution form during trace conditioning (2017)
Journal Article
Bonardi, C., & Jennings, D. J. (in press). The effects of stimulus distribution form during trace conditioning. Quarterly Journal of Experimental Psychology, ISSN 1747-0218

Three experiments examined the effect of the distribution form of the trace interval on trace conditioning. In Experiments 1 and 2 two groups of rats were conditioned to a fixed duration CS in a trace interval procedure; rats in Group Fix received a... Read More

Blocking by fixed and variable stimuli: effects of stimulus distribution on blocking (2016)
Journal Article
Jennings, D. J., & Bonardi, C. (in press). Blocking by fixed and variable stimuli: effects of stimulus distribution on blocking. Quarterly Journal of Experimental Psychology, doi:10.1080/17470218.2016.1216574. ISSN 1747-0218

An experiment with rats compared the ability of fixed and variable duration cues to produce blocking. Rats in Group B (Blocking) were trained that both fixed- (F) and variable- (V) duration cues would be followed by food delivery. In a subsequent tra... Read More

Can existing associative principles explain occasion setting? Some old ideas and some new data (2016)
Journal Article
Bonardi, C., Robinson, J., & Jennings, D. (2017). Can existing associative principles explain occasion setting? Some old ideas and some new data. Behavioural Processes, 137, doi:10.1016/j.beproc.2016.07.007. ISSN 0376-6357

Since occasion setting was identified as a type of learning independent of 'simple' associative processes, a great deal of research has explored how occasion setters are established and operate. Initial theories suggested that they exert hierarchical... Read More

Learning about the CS during latent inhibition: preexposure enhances temporal control (2016)
Journal Article
Bonardi, C., Brilot, B., & Jennings, D. J. (2016). Learning about the CS during latent inhibition: preexposure enhances temporal control. Journal of Experimental Psychology: Animal Learning and Cognition, doi:10.1037/xan0000096. ISSN 2329-8456

In three experiments rats were given nonreinforced preexposure to an auditory stimulus, after which this stimulus and a second, novel cue were paired with food. Lower rates of conditioned responding were observed to the preexposed stimulus across the... Read More

The effect of conditioned inhibition on the specific Pavlovian-instrumental transfer effect (2016)
Journal Article
Alarcón, D., & Bonardi, C. (2016). The effect of conditioned inhibition on the specific Pavlovian-instrumental transfer effect. Journal of Experimental Psychology: Animal Learning and Cognition, doi:10.1037/xan0000087. ISSN 2329-8456

Four experiments examined the effect of Pavlovian conditioned inhibition on specific Pavlovian-instrumental transfer (PIT) in human participants. The task comprised an instrumental phase in which two responses (R1, R2) were each paired with one of tw... Read More

Relative recency influences object-in-context memory (2014)
Journal Article
Tam, S. K., Bonardi, C., & Robinson, J. (2015). Relative recency influences object-in-context memory. Behavioural Brain Research, 281, doi:10.1016/j.bbr.2014.12.024. ISSN 0166-4328

In two experiments rats received training on an object-in-context (OIC) task, in which they received preexposure to object A in context x, followed by exposure to object B in context y. In a subsequent test both A and B are presented in either contex... Read More

Effects of dorsal hippocampal damage on conditioning and conditioned-response timing: a pooled analysis (2014)
Journal Article
Tam, S. K., Jennings, D. J., & Bonardi, C. (2015). Effects of dorsal hippocampal damage on conditioning and conditioned-response timing: a pooled analysis. Hippocampus, 25(4), doi:10.1002/hipo.22381. ISSN 1050-9631

Behavioral findings suggest that the dorsal hippocampus (DHPC) plays a role in timing of appetitive conditioned responding. The present article explored the relationship between the extent of DHPC damage and timing ability, in a pooled analysis of th... Read More

Overshadowing by fixed- and variable-duration stimuli (2014)
Journal Article
Bonardi, C., Mondragón, E., Brilot, B., & Jennings, D. J. (2015). Overshadowing by fixed- and variable-duration stimuli. Quarterly Journal of Experimental Psychology, 68(3), doi:10.1080/17470218.2014.960875. ISSN 1747-0218

Two experiments investigated the effect of the temporal distribution form of a stimulus on its ability to produce an overshadowing effect. The overshadowing stimuli were either of the same duration on every trial, or of a variable duration drawn from... Read More

SSCC TD: a serial and simultaneous configural-cue compound stimuli representation for temporal difference learning (2014)
Journal Article
Mondragón, E., Gray, J., Alonso, E., Bonardi, C., & Jennings, D. J. (2014). SSCC TD: a serial and simultaneous configural-cue compound stimuli representation for temporal difference learning. PLoS ONE, 9(7), doi:10.1371/journal.pone.0102469. ISSN 1932-6203

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 cue... Read More

Dissociations in the effect of delay on object recognition: evidence for an associative model of recognition memory (2014)
Journal Article
Tam, S. K., Robinson, J., Jennings, D. J., & Bonardi, C. (2014). Dissociations in the effect of delay on object recognition: evidence for an associative model of recognition memory. Journal of Experimental Psychology: Animal Learning and Cognition, 40(1), doi:10.1037/xan0000003

Rats were administered 3 versions of an object recognition task: In the spontaneous object recognition task (SOR) animals discriminated between a familiar object and a novel object; in the temporal order task they discriminated between 2 familiar obj... Read More

Dorsal hippocampal involvement in conditioned-response timing and maintenance of temporal information in the absence of the CS (2013)
Journal Article
Tam, S. K., Jennings, D. J., & Bonardi, C. (2013). Dorsal hippocampal involvement in conditioned-response timing and maintenance of temporal information in the absence of the CS. Experimental Brain Research, 227(4), 547--559. doi:10.1007/s00221-013-3530-4

Involvement of the dorsal hippocampus (DHPC) in conditioned-response timing and maintaining temporal information across time gaps was examined in an appetitive Pavlovian conditioning task, in which rats with sham and DHPC lesions were first condition... Read More

Do personality traits predict individual differences in excitatory and inhibitory learning? (2013)
Journal Article
He, Z., Cassaday, H. J., Bonardi, C., & Bibby, P. A. (2013). Do personality traits predict individual differences in excitatory and inhibitory learning?. Frontiers in Psychology, 4(245), doi:10.3389/fpsyg.2013.00245. ISSN 1664-1078

Conditioned inhibition (CI) is demonstrated in classical conditioning when a stimulus is used to signal the omission of an otherwise expected outcome. This basic learning ability is involved in a wide range of normal behavior – and thus its disruptio... Read More

When to hold that thought: an experimental study showing reduced inhibition of pre-trained associations in schizophrenia (2012)
Journal Article
in schizophrenia. PLoS ONE, 7(7), doi:10.1371/journal.pone.0042175. ISSN 1932-6203

Schizophrenia encompasses a wide variety of cognitive dysfunctions, a number of which can be understood as deficits of inhibition. To date, no research has examined ‘conditioned inhibition’ in schizophrenia - the ability of a stimulus that signal... Read More

US specificity of occasion setting: hierarchical or configural learning? (2012)
Journal Article
Bonardi, C., Bartle, C., & Jennings, D. (2012). US specificity of occasion setting: hierarchical or configural learning?. Behavioural Processes, 90(3), doi:10.1016/j.beproc.2012.03.005. ISSN 0376-6357

Four experiments in rats examined whether occasion setters and target CSs play qualitatively different roles in occasion-setting discriminations. Two visual occasion setters, A and B, signalled reinforcement of two auditory target CSs, x and y, with... Read More

Dorsal hippocampal involvement in appetitive trace conditioning and interval timing (2012)
Journal Article
Tam, S. K. E., & Bonardi, C. (2012). Dorsal hippocampal involvement in appetitive trace conditioning and interval timing. Behavioral Neuroscience, 126(2), 258-269. doi:10.1037/a0027164

Involvement of the dorsal hippocampus (DHPC) in acquisition of Pavlovian trace conditioning and interval timing was examined in an appetitive preparation in which presentations of one conditioned stimulus (CS) were immediately followed by food (delay... Read More