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{
    "pk": 21401,
    "title": "Effects of Discrimination Difficulty on Peak Shift and Generalization",
    "subtitle": null,
    "abstract": "In this paper, we test the effect of manipulating discrimination difficulty on subsequent generalization of learning and in particular, on the peak shift effect. Participants learned a discrimination where one stimulus led to an outcome (S+) and another stimulus led to no outcome (S-). Difficulty was manipulated by varying the degree of similarity between the S+ and S- across groups (easy/medium/hard). In contrast to similar studies in animals, we found that increasing the difficulty of the discrimination resulted in less peak shift. Using a hierarchical mixture model, we characterize the effects of discrimination difficulty on relational- and similarity based responding, and show for the first time, a similar mixture of responding on stimulus identification gradients. We conclude that peak shift on generalization and identification measures can be explained by mixtures of participants responding in different ways.",
    "language": "eng",
    "license": {
        "name": "",
        "short_name": "",
        "text": null,
        "url": ""
    },
    "keywords": [
        {
            "word": "Psychology; Animal cognition; Learning; Perception; Mathematical modeling"
        }
    ],
    "section": "Papers with Oral Presentation",
    "is_remote": true,
    "remote_url": "https://escholarship.org/uc/item/4br7d85x",
    "frozenauthors": [
        {
            "first_name": "Jessica",
            "middle_name": "C.",
            "last_name": "Lee",
            "name_suffix": "",
            "institution": "University of Sydney",
            "department": ""
        },
        {
            "first_name": "Tamara",
            "middle_name": "",
            "last_name": "Cahyadi",
            "name_suffix": "",
            "institution": "Macquarie University",
            "department": ""
        },
        {
            "first_name": "Peter",
            "middle_name": "",
            "last_name": "Lovibond",
            "name_suffix": "",
            "institution": "University of New South Wales",
            "department": ""
        },
        {
            "first_name": "René",
            "middle_name": "",
            "last_name": "Schlegelmilch",
            "name_suffix": "",
            "institution": "University of Bremen",
            "department": ""
        }
    ],
    "date_submitted": null,
    "date_accepted": null,
    "date_published": "2024-01-01T18:00:00Z",
    "render_galley": null,
    "galleys": [
        {
            "label": "PDF",
            "type": "pdf",
            "path": "https://journalpub.escholarship.org/cognitivesciencesociety/article/21401/galley/11000/download/"
        },
        {
            "label": "PDF",
            "type": "pdf",
            "path": "https://journalpub.escholarship.org/cognitivesciencesociety/article/21401/galley/21846/download/"
        }
    ]
}