Altruistic behavior: activity intended to help another person with no expectation or reward
The tendency to share with, help, and comfort others seem to be unrelated with each other, but may collectively reflect empathy
Empathy: the ability to imagine how another person might feel in a particular situation
Mirror neurons: neurons that fire when a person does something or observes someone else do the same thing which may be letting people see other people's perspective
Collaborative behaviors is observed when motivation to help and share and the ability to understand others' intentions are present
Research suggests that temperament is a relatively stable individual difference, perhaps because it is largely inborn (not fully formed) and strongly influenced by genetics
Adult-infant interaction patterns are mostly culture-based
Mother's role: Food is not the only need (unlike with earlier theorists' claim) that drives development of relationship with mothers, but also warmth and prompt care
Father's role: Urbanization and maternal employment are changing traditional roles of fathers, seeking more intimate relationships with their children
Girls' social behavior: relatively (small difference) more cuddly and interested in faces; better at discriminating facial expressions and regulating distress, show fewer externalizing emotions
Toy preference: relatively innate, emerge at around 3 months, sex-typed toy preferences have been found in non-human primates, testosterone levels in infancy predict later preference
Play: Preference for same-sex playmates, style of play is likely influenced by prenatal androgen exposure
Gender-typing: Children learn behavior their culture considers appropriate, commonly promoted by fathers
Attachment: reciprocal, enduring tie between two people – especially between infant and caregiver – each of whom contributes to the quality of the relationship
Bowlby's ethological theory of attachment: Recognizes the infant's emotional tie to the caregiver as an evolved response that promotes survival, Internal working model: children's enduring affectionate tie to the caregiver that they use as a secure base in the caregiver's absence
Four phases of attachment development: Preattachment phase, "Attachment-in-the-making" phase, "Clear cut" phase, Reciprocal relationship formation phase
Strange Situation (Ainsworth) experiment: through observing the infants reaction to the caregiver's return, Secure, avoidant, ambivalent (resistant), disorganized-disoriented attachments
Attachment Q-set (AQS) test: caregivers sort a set of descriptive words or phrases into categories ranging from most to least characteristic of the child and compare with expert descriptions of prototypical secure child
Neurological studies saw certain areas of the mother's brain activating at the sight of their own infant smiling and crying compared to seeing other infants
Secure attachment: High self-esteem, empathy, and social skills, Improved cognitive, emotional, and social competence, Launch of a positive parent-child relationship
Insecure attachment: Inhibitions and negative emotions in toddlerhood, More externalizing behaviors, Behavioral problems