Lecture 21: Attachment and Human Development Flashcards
Why is social attachment important?
Social attachment is critical to survival and a precursor to normal development
What are social attachments?
Social attachments develop from the activation of BIOLOGICALLY BASED motivational systems
- attachments are strong enduring and specific - based upon diverse interrelated biological processes - bonding involves a set of behaviors promoting the development and maintenance of closeness
What are types of social attachment?
- infant attachment
- parental behavior (mom and dad)
- pair bond formatioin
What is attachment behavior?
Behavior that promotes proximity to or contact with the person(s) to whom an individual is attached
-attachment is discriminating, specific, reciprocal linked to strong affects and to distress when separation occurs
What are examples of attachment behavior?
Infant parent: clinging, cooing, suckling
Mother-infant: nursing, retrieval, nest building
Father-infant: defense, retrieval, grooming
Pair bonding: shared territory, cohabitation, partner preference, mate guarding
What mediates infant attachment to mom in rodents?
Use of olfactory and somatosensory systems
Olfactory = norepinephrine
-enhanced by isoproterenol and inhibited by propranolol
-circuit = olfactory bulbs locus coeruleus amygdala
-dopamine and oxytocin also involved
Somatosensory = allows pup to suckle
What mediates mother attachment to infant in rodent model?
Mother rodent recognizes infant through OLFACTION
Behavior is mediated via oxytocin and estrogen
Dopamine also mediates maternal behavior because dopamine blockade disrupts maternal behavior
What happens when you give female rodent oxytocin?
Primes the female rodent for attachment
Blocking oxytocin eliminates maternal behavior
What does the prairie vole vs. montaine vole model tell us about oxytocin?
Prairie voles = monogamy = Midwest
Cause: high density of oxytocin receptors in prelimbic cortex and nucleus accumbens
Montaine vole = promiscuous = inner city folk lol
Cause: high density ONLY in lateral septum
If oxytocin is blocked in prairie voles, they turned into montaine voles (became promiscuous)
What are the only two areas of the brain that made a difference in attachment behavior in voles?
Nucleus Accumbens
Prelimbic Cortex
Infusions of oxytocin receptor antagonists (OTA) did NOT have an effect if infused in CSF or Caudate Putamen
What is the significance of Dr. Harlow’s Monkey Experiments?
Shows that monkey will jump to surrogate mother (with cloth) in a fearful situation
- even if raised by wire mother, will jump to cloth mother to get contact love
- if cloth mother is there, infant monkey gets the gumption to go out and explore
- not mother and the monkey shuts down
What is the basis of attachment to mother?
Baby wants the COMFORT and the SOFTNESS of mother
Shown when wired mother had milk, and the monkey would hold on to the cloth mother while drinking milk from wire mother
What is normal for a monkey?
Exploratory behavior
-will not exhibit this behavior if there is no comfort from mother
What happens to the social development of monkeys who are deprived of maternal attachment?
When put amongst their peers, have harder time making friends and social bonds
What are the necessary conditions for development of attachment?
- Sufficient interaction with caretaker
- Discriminative abilities of infant
- Imitative capacities of infant (“mirror neurons”)
- Ability of infant conceive of a person as having a permanent and independent existence even when not present (object permanence)
- to see someone else as person that one can count on
What are the phases of attachment formation?
Phase I: indiscriminate sociability (birth to 2months)
Phase II: attachments in the making (2-7 months
Phase III: clear cut attachments (7-24 months)
Phase IV: goal-coordinated partnerships (past 24m)
What is Phase I of attachment formation?
Indiscriminate Sociability
Caregiver maintains proximity to protect infant
Infant behaves in same way towards ANYONE who interacts in caring fashion
Birth – 2months