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Learning & Behavior

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https://www.readbyqxmd.com/read/28707061/the-evolutionary-significance-of-pretend-play-two-year-olds-interpretation-of-behavioral-cues
#1
Lili Ma, Angeline S Lillard
Pretend play begins very early in human life. A key question is why, when figuring out reality is young children's major developmental task, they engage in its deliberate falsification. A second key question is how children know that pretend events are not real. Here we report three experiments addressing the latter question and providing indirect evidence for speculation on the first question. Children (N = 96) were shown actors eating or pretending to eat from covered bowls, and they had to indicate, on the basis of the actors' behavioral signs, which actor was pretending to eat or had the real food...
July 13, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28707060/the-psychological-significance-of-play-with-imaginary-companions-in-early-childhood
#2
Tracy R Gleason
Although social play is common to many species, humans are unique in their ability to extract some of the benefits of social play through imagination. For example, in play with imaginary companions (ICs), children often practice skills that might be useful for later adaptive social, relational, and emotional functioning. While play with ICs does not provide the same immediate feedback that play with real others affords, this imagined, quasisocial context allows children to experiment with or rehearse events that might occur in real relationships...
July 13, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28702756/creating-a-common-terminology-for-play-behavior-to-increase-cross-disciplinary-research
#3
Lance J Miller
Historically, play behavior has been difficult to define. This likely stems from the number of different species, types of play, and context under which it occurs. In 2016, the Chicago Zoological Society - Brookfield Zoo hosted the Psychonomic Society leading edge workshop on the evolutionary and psychological significance of play. Sixteen experts attended from the diverse fields of African ethnology, animal behavior, animal science, animal welfare, cognitive psychology, cognitive zoology, comparative psychology, cultural anthropology, developmental psychology, educational psychology, ethology, neuroscience, primatology, and zoology...
July 12, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28702755/the-influence-of-breed-and-environmental-factors-on-social-and-solitary-play-in-dogs-canis-lupus-familiaris
#4
Lindsay R Mehrkam, Nathaniel J Hall, Chelsea Haitz, Clive D L Wynne
The domestic dog is an ideal model species in which to study the genetic and environmental factors that influence play behavior. Dogs exist in a wide variety of breeds and frequently engage in multiple forms of play. In the present study, we investigated whether the levels of solitary and social play differed between dogs of three breed types with distinct predatory motor pattern sequences (herding dogs, retrievers, and livestock guarding dogs [LGDs]). Furthermore, we investigated how environmental factors (social and nonsocial contexts) influenced play in dogs of these breed types...
July 12, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28699100/reward-devaluation-disrupts-latent-inhibition-in-fear-conditioning
#5
Luís Gonzalo De la Casa, Auxiliadora Mena, Juán Carlos Ruiz-Salas, Esperanza Quintero, Mauricio R Papini
Three experiments explored the link between reward shifts and latent inhibition (LI). Using consummatory procedures, rewards were either downshifted from 32% to 4% sucrose (Experiments 1-2), or upshifted from 4% to 32% sucrose (Experiment 3). In both cases, appropriate unshifted controls were also included. LI was implemented in terms of fear conditioning involving a single tone-shock pairing after extensive tone-only preexposure. Nonpreexposed controls were also included. Experiment 1 demonstrated a typical LI effect (i...
July 11, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28656521/strategic-interactions-games-of-the-ju-hoan
#6
Alex de Voogt
Three strategic games played by the Ju|'hoan-a board, a card, and a gesture game-complicate the rhetorics that suggest an evolutionary or psychological significance of play. They are mostly played by adults, although every individual adult does not necessarily engage in each game. The Ju|'hoan card and board game practices were transmitted through contact across large parts of Botswana and Namibia, while the gesture game n!àì has been known in other San communities. It suggests that the significance of strategic games is more likely found in its potential for social interaction (i...
June 27, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28646322/does-chess-instruction-improve-mathematical-problem-solving-ability-two-experimental-studies-with-an-active-control-group
#7
Giovanni Sala, Fernand Gobet
It has been proposed that playing chess enables children to improve their ability in mathematics. These claims have been recently evaluated in a meta-analysis (Sala & Gobet, 2016, Educational Research Review, 18, 46-57), which indicated a significant effect in favor of the groups playing chess. However, the meta-analysis also showed that most of the reviewed studies used a poor experimental design (in particular, they lacked an active control group). We ran two experiments that used a three-group design including both an active and a passive control group, with a focus on mathematical ability...
June 23, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28643142/temporal-discounting-of-aversive-consequences-in-rats
#8
William Rodríguez, Arturo Bouzas, Vladimir Orduña
Previous research has extensively evaluated the impact of delay on the value of positive reinforcers, but the study of its impact on the value of aversive consequences is scarce. The present study employed a modification of Evenden and Ryan's procedure (1996, Psychopharmacology, 128(2), 161-170) to obtain data on temporal discounting of an aversive consequence, with rats as experimental subjects. In the first phase of the procedure, rats chose between one-pellet and four-pellet alternatives; when subjects developed preference for the larger-amount alternative, a shock was added to it, resulting in a loss of preference...
June 22, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28638991/integrating-tinbergen-s-inquiries-mimicry-and-play-in-humans-and-other-social-mammals
#9
Elisabetta Palagi, Chiara Scopa
Visual signals convey emotions and intentions between individuals. Darwin underlined that human facial expressions represent a shared heritage between our species and many other social mammals. Social play is a fertile field to examine the role and the potential communicative function of facial expressions. The relaxed open-mouth (or play face) is a context-specific playful expression, which is widespread in human and non-human mammals. Here, we focus on playful communication by applying Tinbergen's four areas of inquiry: proximate causation, ontogeny, function, and evolution...
June 21, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28597217/context-modulation-of-learned-attention-deployment
#10
Metin Uengoer, John M Pearce, Harald Lachnit, Stephan Koenig
In three experiments, we investigated the contextual control of attention in human discrimination learning. In each experiment, participants initially received discrimination training in which the cues from Dimension A were relevant in Context 1 but irrelevant in Context 2, whereas the cues from Dimension B were irrelevant in Context 1 but relevant in Context 2. In Experiment 1, the same cues from each dimension were used in Contexts 1 and 2, whereas in Experiments 2 and 3, the cues from each dimension were changed across contexts...
June 8, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28585022/erratum-to-relationship-between-individual-and-group-learning-in-a-marine-teleost-a-case-study-with-sea-bass-under-self-feeding-conditions
#11
David Benhaïm, Sébastien Ferrari, Tatiana Colchen, Béatrice Chatain, Marie-Laure Bégout
No abstract text is available yet for this article.
June 5, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28488062/cocaine-preexposure-enhances-sexual-conditioning-and-increases-resistance-to-extinction-in-male-japanese-quail
#12
Chana K Akins, B Levi Bolin, Karin E Gill
The incentive-sensitization theory posits that drug addiction results from altered learning and motivational processes that stem from drug-induced changes in the brain's reward circuitry. Although it is generally accepted that problematic drug use results from these neuroadaptations, less research has focused on how these neural changes affect the incentive-motivational properties of naturally rewarding stimuli such as sex. The present set of experiments was conducted to investigate (1) dose-dependent effects of preexposure to chronic cocaine on sexual conditioning and (2) how prior cocaine exposure affects the extinction of sexually conditioned behavior in male Japanese quail...
May 9, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28462457/how-lost-passenger-ants-find-their-way-home
#13
Mandyam V Srinivasan
Animal navigation has fascinated biologists and engineers for centuries, and some of the most illuminating discoveries have come from the study of creatures with a brain no larger than a sesame seed. In an elegant recent study, Pfeiffer and Wittlinger (Science, 353, 1155-1157, 2016) have shown the means by which desert ants, carried from one nest to another by a relative, find their own way back home if they are accidentally dropped en route.
May 1, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28432592/perceptual-learning-with-tactile-stimuli-in-rodents-shaping-the-somatosensory-system
#14
REVIEW
Nicole Pacchiarini, Kevin Fox, R C Honey
The animal kingdom contains species with a wide variety of sensory systems that have been selected to function in different environmental niches, but that are also subject to modification by experience during an organism's lifetime. The modification of such systems by experience is often called perceptual learning. In rodents, the classic example of perceptual learning is the observation that simple preexposure to two visual stimuli facilitates a subsequent (reinforced) discrimination between them. However, until recently very little behavioral research had investigated perceptual learning with tactile stimuli in rodents, in marked contrast to the wealth of information about plasticity in the rodent somatosensory system...
June 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28236276/understanding-dog-cognition-by-functional-magnetic-resonance-imaging
#15
Ludwig Huber, Claus Lamm
Recent pioneering work has shown the great promise that scanning awake, nonsedated dogs holds for both understanding the canine and the human brain and mind. A number of technological and methodological challenges, however, still need to be overcome to fully tap this potential.
June 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28091814/effects-of-forced-movements-on-learning-findings-from-a-choice-reaction-time-task-in-rats
#16
Hidekazu Kaneko, Hiroto Sano, Yasuhisa Hasegawa, Hiroshi Tamura, Shinya S Suzuki
To investigate how motor sensation facilitates learning, we used a sensory-motor association task to determine whether the sensation induced by forced movements contributes to performance improvements in rats. The rats were trained to respond to a tactile stimulus (an air puff) by releasing a lever pressed by the stimulated (compatible condition) or nonstimulated (incompatible condition) forepaw. When error rates fell below 15%, the compatibility condition was changed (reversal learning). An error trial was followed by a lever activation trial in which a lever on the correct or the incorrect response side was automatically elevated at a preset time of 120, 220, 320, or 420 ms after tactile stimulation...
June 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28078654/capuchin-monkeys-can-make-and-use-stone-tools
#17
Edward A Wasserman, Roger K R Thompson
Scientists hoping to elucidate the origin of human stone tool manufacture and use have looked to extant primate species for possible clues. Although some skepticism has been raised, there is clear evidence that today's capuchin monkeys can make and use stone tools.
June 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28432591/prior-beliefs-influence-symmetrical-or-asymmetrical-generalizations-in-human-causal-learning
#18
Ryoji Nishiyama, Takatoshi Nagaishi, Takahisa Masaki
The generalization decrement between element A and compound AX has shown both symmetrical (Thorwart & Lachnit, 2009) and asymmetrical (Glautier, 2004) patterns in human contingency learning. In a series of experiments we examined the hypothesis that prior beliefs about the relationship between a distinctive element X and an outcome are important for determining the different generalization patterns. Participants learned which given enterobacteria caused a negative or a positive effect on gastrointestinal conditions...
April 21, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28421468/gambling-in-rhesus-macaques-macaca-mulatta-the-effect-of-cues-signaling-risky-choice-outcomes
#19
Travis R Smith, Michael J Beran, Michael E Young
Preference for a larger-variable "risky" option over a smaller-reliable "safe" option often depends upon the likelihood that the risky option will deliver a sufficiently sized reward to have an equivalent or superior expected value. However, preference for the risky option has been shown to increase under conditions where informative stimuli signaling the outcome of a risky choice is included between the choice and the outcome and this risk-prone preference persists even when the risky option has a lower expected value than the alternative safe option...
April 18, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28411304/numbers-and-brains
#20
C R Gallistel
The representation of discrete and continuous quantities appears to be ancient and pervasive in animal brains. Because numbers are the natural carriers of these representations, we may discover that in brains, it's numbers all the way down.
April 14, 2017: Learning & Behavior
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