Wk 10 - Intentionality Flashcards
Dunbar (1992,95) Plotted numerous factors that could potentially relate to neocortex ratio, like…(x3)
But found a linear relationship only with…(x1)
Fruit in diet
Size of range
Type of foraging - skilled/unskilled/specialised extractive foraging, non-extractive
Group size
Dunbar (2003) concluded that when ability to maintain group size is at selective optimum…(x2)
Whole brain size increase may be necessary in order to support the large social group
Very clear causal theory – expansion was necessary for coping with increasing social connections, not other way round
Dunbar refers to gossip as…(x1)
Arguing that…(x2)
And that therefor, new ecological skills may have been the outcome of…(x1)
Modern grooming
Gossip increases social cohesion, requires keeping in mind many different things
This complex cognition is driver of brain size
Opportunity provided by increase in general intelligence generated by social requirements - potentially the move of mirror system from motor to social?
Theory of mind has been posited as one of the drivers of the move into…(x1)
Because it allows us to…(x2)
Cumulative culture
Begin to be able to conceptualise another’s mind, and explain their behaviour through such understanding rather than external behaviours
And therefor shape our behaviour on others’ rather than making it up as we go along
ToM is commonly measured through false belief tasks, such as…(x2)
Finding that….(x2)
Because younger kids don’t…(x1)
Goat puts ball in one container, monkey gets it out, puts it in another
Test is whether kid keeps track
Around 4-5 yo kids answer questions correctly
Younger than that, they get control questions correct, but not where the the animal will look for the ball -
Understand that others don’t know the same info as them
The surprise contents task is a type of false belief task, involving, eg (x2)
Finding…(x2)
Because young kids can’t…(x1)
Bandaid box, but with pencils inside - show the kid this
Then ask what’s inside –
Thinks that she always thought there were pencils inside
Most 3yo will say the monkey will also think pencils –
Imagine monkey doesn’t know what she does
Wellman, Cross and Watson (2001) conducted a met-analysis of false belief tasks involving…(x2)
Finding…(x3)
150 studies, with 600 false belief conditions and task variations
Clear shift from 2-3 yo, to 5-6yo
Cross-cultural shows some variation, but not very big
No other animal can pass false belief tasks – inference that they don’t have TOM
Comparisons of mean group size and individual societies by Dunbar have concluded that…(x3)
Camps increase in size, until
They become clans
But when clan reaches about 150,
It breaks up into new ones that form part of tribe
Aiello and Dunbar (1993) compared grooming time and group size across past 3.5 million years, finding that…(x4)
Group size fairly stable through much of history, into H erectus period
Rapid expansion from neanderthalensis
Almost identical distribution for grooming time/time spent on relationships - grows with group size
And for growth of capacity for intentionality/thinking about mental lives of others
Intention is not Tom in itself, but is a critical component because it…(x2)
ie we make judgments about…(x1)
Provides the foundation for ToM
Provides interpretive matrix for deciding what others are doing
Others’ behaviour based on the intent behind it
Intentions require what three essential components
Reference value or goal - what are they trying to do?
Ability to act in order to change the environment
Ability to perceive the environment so as to know when it matches the goal
We interpret the nature and intention of others’ behaviour through …(x1)
By processing the…(x5 plus egs)
Attending to people's reactions to the outcomes of their actions Goal - open box, Decision - the means/plan, Intention - carry out the plan, Result - of actions, Reaction - happy/sad to success/failure
Studies of intention interpretation often involve either…(x1 plus eg)
Or…(x2)
Violation of expectation paradigms,
Train track down the hill and rolls, violation is when train should have run into a block, but comes out the other side
Infants look longer/show surprise to violation
Habituation to a process, then dishabituate to a change of sequence
Woodward (1998) tested children’s understanding of animate actions, in habituation study involving/finding…(x4)
Leading to conclusions that…(x3)
Bear and ball on podiums
Actor starts by reaching the ball - infants habituate to this
They don’t dishabituate to reaching for ball swapped to other podium, but
Will to the bear on either
6mo may see human action as goal directed, but
Possible it’s object-directed
Not full intentionality, but minimally, 6mo expects consistent interactions over short time span
Gergely (1995) Tested infants understanding of the pursuit of goals, in study involving…
Clip with column in centre, with a ball goes back and forth, then jumps over
Watch it till no reaction - habituation
Then barrier removed, ball straight through, or jumping over in space
Don’t dishabituate to going straight – no need for ball to jump
9-12 mo, but not 6mo, dishabituate to jumping – it’s an odd behaviour, so is new and novel