Animals 1 Chickens 1 Domestic chicks 1 Imprinting, Psychological 1 Learning 1 Predispositions 1 Sensitive periods Social cognition 1 animal 1 animal experiment 1 animal model 1 article 1 attentional bias 1 chick 1 chicken 1 environmental factor 1 human 1 imprinting (psychology) 1 learning 1 nonhuman 1 precocial species 1 social cognition 1 social evolution 1