Infancy human 6 Humans 5 Infant 5 female 5 infant 5 male 4 Article 3 Female 3 child 3 controlled study 3 infancy 3 Adult 2 Categorization 2 Child 2 Habituation 2 Male 2 adult 2 article 2 child development 2 child parent relation 2 human experiment 2 learning 2 major clinical study 2 Active inference 1 Anxiety 1 Attention 1 Category learning 1 Child Development 1 Computational model 1