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Untitled work

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Evaluation of ultrasonic vocalizations in a neurodevelopmental model of schizophrenia during the early life stages of rats

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Play in Rats: Association across Contexts and Types, and Analysis of Structure

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The Effect of Maternal Immune Activation on Social Play-Induced Ultrasonic Vocalization in Rats

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Maternal Immune Activation Induced by Prenatal Lipopolysaccharide Exposure Leads to Long-Lasting Autistic-like Social, Cognitive and Immune Alterations in Male Wistar Rats

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β-Adrenoreceptor Stimulation Mediates Reconsolidation of Social Reward-Related Memories

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Hyperactivation of the amygdala correlates with impaired social play behavior of prepubertal male rats in a maternal immune activation model

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Who’s laughing? Play, tickling and ultrasonic vocalizations in rats.

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Stress alters social behavior and sensitivity to pharmacological activation of kappa opioid receptors in an age-specific manner in Sprague Dawley rats

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Effects of alpha-2 adrenoceptor antagonists on rough-and-tumble play in juvenile rats: evidence for a site of action independent of non-adrenoceptor imidazoline binding sites

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Individual differences in social play behaviour predict alcohol intake and control over alcohol seeking in rats

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Animal play and evolution: Seven timely research issues about enigmatic phenomena

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Play fighting revisited: its design features and how they shape our understanding of its mechanisms and functions

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Playful brains: a possible neurobiological pathway to cognitive health in aging

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The evolution of social play in songbirds, parrots and cockatoos - emotional or highly complex cognitive behaviour or both?

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The promotion of play behaviour in grow-finish pigs: The relationship between behaviours indicating positive experience and physiological measures

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Play partner preferences among groups of unfamiliar juvenile male rats

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Social play fosters cooperation in wild adult chimpanzees

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Neurexin1α knockout in rats causes aberrant social behaviour: relevance for autism and schizophrenia

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Social play behavior is driven by glycine-dependent mechanisms

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Skateboarding and the surplus value of city play

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Maternal exposure to buprenorphine, but not methadone, during pregnancy reduces social play behavior across two generations of offspring

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Rearing pigs with play opportunities: the effects on disease resilience in pigs experimentally inoculated with PRRSV

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Nuancing ‘Emotional’ Social Play: Does Play Behaviour Always Underlie a Positive Emotional State?

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Oppositions, joints, and targets: the attractors that are the glue of social interactions

Ham, J. R., Pellis, S. M., & Pellis, V. C. (2024) · Frontiers in Behavioral Neuroscience · doi:10.3389/fnbeh.2024.1451283 · Cited by 5 · see citing works

Exploring the effect of play on heart rate variability as a measure of positive emotional states in pigs

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Groups of familiar male rats form unstable partner preferences when play fighting during the juvenile period

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Juvenile male rats form preferences based on strain when playing in groups but not in pairs

Ham, J. R., Jaiswal, D., Waner-Mariquito, R., Pellis, S. M., & Achterberg, E. J. M. (2025) · Frontiers in Behavioral Neuroscience · doi:10.3389/fnbeh.2025.1617178 · Cited by 5 · see citing works

Play behavior in ectothermic vertebrates

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Regular play opportunities during the grow-finish phase improve pig trainability and learning in a cognitive bias test

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Algorithmic Hegemony

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Common marmosets use body posture as multi-functional signal to solicit, maintain, and modify social playPreprint

Adriaense, J. E. C., Ringen, E. J., Ohashi, A., & Burkart, J. M. (2024) · bioRxiv (Cold Spring Harbor Laboratory) · doi:10.1101/2024.08.14.607991 · Cited by 4 · see citing works

The Role of Play in the Social Development of Grey Seal (Halichoerus grypus) Pups with Comparative Notes on the Harbour Seal (Phoca vitulina)

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RNA ‐sequencing reveals a shared neurotranscriptomic profile in the medial preoptic area of highly social songbirds and rats

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The effects of oral gestational particulate matter 10 exposure: Insights into neurodevelopmental milestones, inhibitory control, adult sociability, and object recognition

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Effect of social play deprivation on stress sensitivity in response to social and non-social challenges

Achterberg, E. J. M., Klooster, J. G. L. T., Pimentel, T. C., Aleksić, A., Hendriks, J., Nijhof, S. L., van der Ent, C. K., & Lesscher, H. M. B. (2024) · Frontiers in Ethology · doi:10.3389/fetho.2024.1458136 · Cited by 2 · see citing works

From welfare indicator to welfare contributor: the role of play in building flexibility and resilience in captive animals

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Characterization of postnatal brain injury and behavioural deficits in a rat model of placental insufficiency‐induced fetal growth restriction

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Adding a layer of playfulness?

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Social play exclusion model in adolescent rats: Monitoring locomotor and emotional behavior associated with social play and examining c-Fos expression in the brain

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Disruption of social play influences development of caution in juvenile ground squirrels

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Play behavior: Why do adults play less than juveniles?

Pellis, S. M., & Ham, J. R. (2024) · Current Biology · doi:10.1016/j.cub.2024.06.054 · Cited by 2 · see citing works

Sex and Age-at-Injury as Determinants of Social Behavior Outcomes After TBI

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Partner Choice and Context‐Dependent Sex Differences in Rat Rough‐and‐Tumble Play

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Juvenile social play and the development of socio-cognitive skills in male rats: Does everyone benefit?

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The effect of 3-di-o-tolylguanidine on the level of neurotransmitters in the cerebellum and related disorders of social behavior

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Understanding play from neurobiological, evolutionary, and comparative perspectives

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Endocannabinoids and social behavior

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Brief digital and traditional gameplay transiently reallocate attentional resources in preschool children

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The role of the dopamine D1 receptor in anticipatory pleasure and social play

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A rat model of volitional mutual social interactions

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Rat Anterior Insula Symmetrically Represents Tickling-Induced Playful EmotionsPreprint

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Tickling of rats is associated with positive affective states, but does not replicate juvenile social play regarding the involvement of central oxytocin and vasopressin systemsPreprint

Tivey, E. K. L., Martin, J., Brown, S. M., Bishop, V. R., Bombail, V., Lawrence, A. B., & Meddle, S. (2024) · Research Square · doi:10.21203/rs.3.rs-4472769/v1 · Cited by 1 · see citing works

Nuancing 'Emotional' Social Play: Does Play Behaviour Always Underlie a Positive Emotion?Preprint

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Evaluating the play fighting of rats: A sociological perspective

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Play behavior

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From In Utero to Adolescence: Determining the Impact of Prenatal Cannabinoid Exposure on Neurodevelopment Using Animal Models

Ferland, J. N. (2025) · Springer eBooks · doi:10.1007/978-3-031-87990-6_8

The role of endocannabinoids in nonpharmacological addiction

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Roles of eCB in adolescence and sensitive periods

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Decoding the Valence of Developmental Social Behavior: Dopamine Governs Social Motivation Deficits in AutismPreprint

Chen, X., Tao, X., Zhong, Z., Zhang, Y., Li, Y., Ouyang, Y., Ding, Z., An, M., Wang, M., & Li, Y. (2025) · bioRxiv (Cold Spring Harbor Laboratory) · doi:10.1101/2025.11.12.687985

Heightened Play following Play Observation in the Absence of 22KHz Calls in Juvenile RatsPreprint

Michon, F., Achterberg, E. J. M., Kaufmann, L. V., Packheiser, J., Bos, S., van Reenen, K., Gazzola, V., & Keysers, C. (2025) · bioRxiv (Cold Spring Harbor Laboratory) · doi:10.64898/2025.12.31.697143

Methylation and merriment: an exploration of epigenetic mechanisms underlying play behaviour

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Preconception Exposure to Chronic Stressors Impairs Social Behaviors in Prairie Vole Offspring ( Microtus ochrogaster ): Partial Mediation by Parental Pair‐Bonding and Parenting Behaviors

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The spectre and promise of species diversity

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Heightened play following play observation in the absence of 22-kHz calls in juvenile rats

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Play Behaviour

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Primate Play and the Classificatory Making of Human Nature

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Social Play Behavior

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What the Laboratory Rat has Taught us About Social Play Behavior: Role in Behavioral Development and Neural Mechanisms

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Assessing Dyadic Social Interactions in Rodent Models of Neurodevelopmental Disorders

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