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{
    "pk": 5328,
    "title": "The Development of Juvenile-Typical Patterns of Play Fighting in Juvenile Rats does not Depend on Peer-Peer Play Experience in the Peri-Weaning Period",
    "subtitle": null,
    "abstract": "Play fighting in rats involves attack and defense of the nape. To protect the nape, rats use a variety of defensive tactics, with different strains having specific preferences. Targeting of the nape is established before weaning and defense matures over the course of the week preceding and the week proceeding weaning. Thus, it is possible that experience from engaging in immature forms of play is needed to consolidate the nape as the playful target and for the development of the juvenile-typical pattern of defense. Two experiments were conducted to evaluate this possibility. For the first experiment, male rats were reared over the week post-weaning in either pairs or alone, and their play tested with unfamiliar partners when juveniles (31-34 days). For the second experiment, during the week preceding weaning, male and female rats were placed into one of three conditions: (1) with the mother and no peers, (2) with same-sex siblings but no mother or (3) with both the mother and same-sex siblings. The subjects were tested in same-sex, same-condition pairs when juveniles (31-34 days). Rats from all conditions, in both experiments, attacked the nape during play fighting and developed the same juvenile-typical patterns of playful defense. This suggests that the experience of peer-peer play in the peri-weaning period is not necessary for the development of the attack and defense components of juvenile-typical play.",
    "language": "en",
    "license": {
        "name": "Creative Commons Attribution 4.0",
        "short_name": "CC BY 4.0",
        "text": "Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.\r\n\r\nNo additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.",
        "url": "https://creativecommons.org/licenses/by/4.0"
    },
    "keywords": [
        {
            "word": "development"
        },
        {
            "word": "Long Evans Hooded Rats"
        },
        {
            "word": "Peri-Weaning"
        },
        {
            "word": "Wild Rats"
        }
    ],
    "section": "Research Article",
    "is_remote": true,
    "remote_url": "https://escholarship.org/uc/item/9wh1h32n",
    "frozenauthors": [
        {
            "first_name": "Brett",
            "middle_name": "T",
            "last_name": "Himmler",
            "name_suffix": "",
            "institution": "University of Lethbridge",
            "department": "None"
        },
        {
            "first_name": "Stephanie",
            "middle_name": "M",
            "last_name": "Himmler",
            "name_suffix": "",
            "institution": "University of Lethbridge",
            "department": "None"
        },
        {
            "first_name": "Rafal",
            "middle_name": "",
            "last_name": "Stryjek",
            "name_suffix": "",
            "institution": "Institute of Psychology, Polish Academy of Sciences",
            "department": "None"
        },
        {
            "first_name": "Klaudia",
            "middle_name": "",
            "last_name": "Modlińska",
            "name_suffix": "",
            "institution": "Institute of Psychology, Polish Academy of Sciences",
            "department": "None"
        },
        {
            "first_name": "Wojciech",
            "middle_name": "",
            "last_name": "Pisula",
            "name_suffix": "",
            "institution": "Institute of Psychology, Polish Academy of Sciences",
            "department": "None"
        },
        {
            "first_name": "Sergio",
            "middle_name": "M",
            "last_name": "Pellis",
            "name_suffix": "",
            "institution": "University of Lethbridge",
            "department": "None"
        }
    ],
    "date_submitted": "2014-10-08T22:30:05+02:00",
    "date_accepted": "2014-10-08T22:30:05+02:00",
    "date_published": "2015-01-31T09:00:00+01:00",
    "render_galley": null,
    "galleys": [
        {
            "label": "",
            "type": "",
            "path": "https://journalpub.escholarship.org/uclapsych_ijcp/article/5328/galley/3190/download/"
        }
    ]
}