Moral Babies: Preverbal Infants Know Who and What Is Good and Bad
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Moral Babies: Preverbal infants know who and what is good and bad J. Kiley Hamlin UBC Psychology Automatic Evaluation “Big bully” “Blinded by rage and frustration” “The villain” “Sweet circle” “Lovers” “Innocent Young Things” Bad guy. “Our hero” Good guys. Triangles and circles?? Heider & Simmel, 1944 (See also Haidt, 2001 for evidence for “intuitive” moral judgments) AutomaticHow do we Evaluation do this? • Surely some is learned • but which type of experience? • deliberate, slow = result of teaching and cognitive development? • easy, fast = based on every day observations and experiences in the world? resulting automaticity/intuitive nature in adults due to practice (driving) • Perhaps some aspects built-in? My pursuit: • Determine what, if anything, is built-in and/or develops in the absence of candidate required experiences • language, teaching, enculturation • specific personal experience • Examine a population with much less of these • To what extent do infants’ evaluations map onto adult moral judgments? Basic methodology: 3 character puppet shows: Protagonist, Helper, Hinderer Goal: Reach hilltop Obtain object Obtain object Problem: Too steep Someone else has it In box, can’t lift lid Helpful Act: Unhelpful Act: Preference for Helpers over Hinderers? • Depending on age/study, habituate or familiarize infants to helper/hinderer events • We then examine their preference (choice or attention) • moms close eyes • choice experimenter blind to identity Some preference results: Helper Hinderer 100 ** ** ** ** 75 * 50 25 Preference: % Infants 0 Hill: 6 months choice Hill: 3 months looking Box: 5 months choice Ball: 5 months choice Ball: 3 months looking e.g., Hamlin, Wynn, & Bloom, 2007, Nature; Hamlin, Wynn, in Bloom, 2010, Dev Sci; Hamlin & Wynn, 2011, Cog Dev But how are they doing this? Helper = good because intends to facilitate what another intends Hinderer = bad because intends to block what another intends How are they doing this? • Helping and hindering not differentially familiar or expected • No looking time differences to helpful vs unhelpful events • But they do seem to react positively to helping and negatively to hindering • Blind coders correctly predict what kind of event infants just watched based on their facial expressions (5 & 6 mo conditions) Hamlin, Wynn, & Bloom, in prep How are they doing this? But perhaps just something inherent to the stimuli? Inanimate control conditions: Pusher-Upper v. Ball-Giver v. Box-Opener v. • Pushing up Pusher-Downer Ball-Taker Box-Closer versus down • Ball leaving versus taking • Box opening versus closing Nope: no preferences in any inanimate conditions: Action must be directed at an agent How are they doing this? • Maybe they like goal-facilitators and Helper of agent = good dislike goal-blockers Hinderer of agent = bad • But adults interpret behavior in context: • e.g., mom blocking baby’s goal to reach light socket • e.g., reward and punishment • A human universal, theorized to stabilize cooperative social systems (Boyd et al, 2003; Fowler, 2005, Hauert et al, 2007; Henrich, 2006; Henrich & Henrich, 2007; Nowak & Sigmund, 2005) Evaluating Rewarders and Punishers • When adults see others as deserving punishment, we may positively evaluate those who perform it...do infants? Protagonist with unfulfilled goal Help act Deserves Reward Hindering act Deserves Punishment Evaluating Rewarders and Punishers Prosocial Antisocial Target Target (2 separate conditions) Helped ? Hindered ? Evaluating Rewarders and Punishers: Results Helper Hinderer ** ** ** NS 100 ** ** ** ** ** ** 75 50 25 Choice - % Infants 0 Prosocial Target Antisocial Target Prosocial Target Antisocial Target Prosocial Target Antisocial Target 19-month-olds 8-month-olds 5-month-olds Hamlin, Wynn, Bloom, & Mahajan, 2011, PNAS How are they doing this? By 8 months, Helping good guys = good Hindering bad guys = good • Evaluating in context! • At least resembles adult intuitions of deservedness/reward/punishment • But maybe 8- and 19-month-olds are just valence matching? Valence-matching? Causal role in valenced acts critical for evaluation: Only moral agents deserve punishment, not patients If they’re valence matching, they should also prefer hinderer of hindered target They don’t. (they like the helper) Receives bad Does bad behavior; behavior; does not deserve deserves punishment punishment So...how are they doing this? By 8 months, Helping • Resembles adult intuitions of good guys = good deservedness/reward/punishment Hindering bad guys = • But maybe evaluations based on good analyzing outcomes only • A first-order goal account: infants analyze the goal of the Protagonist only; like those who bring it about (if P = good) and dislike those who prevent it (if P=bad) • In particular, no intention to help/ harm on the part of the Helper/ Hinderer Intention v Outcome? • Even within a social analysis that incorporates contextual info, infants could evaluate: • The outcome only (causes Protagonist to get goal (+) or not (-)) • The intention only (intends to be nice (+); or mean (-)) • Adults’ judgments incorporate both; kids tend to rely on outcome (e.g., Piaget, 1932, a zillion others) • Some evidence infants capable of distinguishing intention from outcome: • in analysis of others’ goal-directed acts (e.g. Brandone & Wellman, 2009; Carpenter et al, 1998; Hamlin et al, 2008, 2009; Meltzoff, 1995) • in evaluations of first-party interactions • Failed attempts to help (Behne et al, 2005, Dunfield & Kuhlmeier, 2010) Failed Attempts: Puppet Shows Failed Helper Failed Hinderer Failed Attempts: Design • 5- and 8-month-olds • Set 1: Can they use intention only? (Outcomes equal, intentions differ) Failed Helper versus Hinderer Failed Hinderer versus Helper • Set 2: Intention versus outcome? (Intention pitted against outcome) Failed Helper versus Failed Hinderer • Set 3: Do they use outcome only? (Outcomes differ, intentions equal) Failed Helper versus Helper Failed Hinderer versus Hinderer Failed Attempts: Results; 8-mo-olds * Nicer/Better Response Meaner/Worse Response 100 ** ** ** 75 Using Intention NS NS Privileging Intention 50 25 Not Using Outcome Choice - Percent Infants Choice - Percent (H+) (FH-) (FH+) (H-) (FH+)(FH-) (H+) (FH+) (FH-) (H-) 0 [Help v Failed Hinder] [Failed Help v Hinder] [Failed Help v Failed Hinder] [Help v Failed Help] [Failed Hinder v Hinder] Outcomes both good Outcomes both bad Outcomes oppose Intention Intentions both good Intentions both bad 8-month-olds, n=16 per condition Hamlin, under review Failed Attempts: Results; 5- and 8-mo-olds Nicer/Better 100 Meaner/Worse (replicated 5-month-old success with * * * Successful Helper v Successful Hinderer) 75 NS NS NS NS NS NS NS 50 Choice - Percent Infants Choice - Percent 25 0 [Help v Failed Hinder] [Failed Help v Hinder][Failed Help v Failed Hinder] [Help v Failed Help] [Failed Hinder v Hinder] Outcomes both good Outcomes both bad Outcome opposes Intention Intentions both good Intentions both bad n=16 per condition Hamlin, under review Failed Attempts: Conclusions • (Also have a control for movement - you can ask me later) Positive intention = good Negative intention = bad • 8-month-olds uniquely use intention • 5-month-olds need both • Neither uniquely utilize outcome • although characters didn’t play a direct 8-month-old causal role in outcomes here - that would be accidental help/harm • But they are definitely not only going with outcome, nor merely evaluating goal blocking/facilitating But...adults are still more mentalistic! • Giving Brussels Sprouts = Good? • Depends who you ask. • Prosocial/Antisocial acts don’t have to look any different • So, you need to know something about the mental states of the target (like their preferences) to know what is helpful/unhelpful for him/her • If you don’t know, you can’t really be praised/blamed • AND preferences tend to be relative: I like brussels sprouts, but I LOVE chocolate Preference Facilitation Study: Methods • 10-month-olds • Phase 1: 2 elephants watch as Protagonist grasps the same toy 4X (which one counterbalanced) • Phase 2: Protagonist loses access to toys • Phase 3: One puppet gives access to toy previously grasped, other gives access to toy previously ungrasped Preference Facilitation Study: Puppet Shows Preference Events repeated 4 times; objects switch each time Preference Facilitation Study: Puppet Shows Lost Access Event For half the babies the previously-grasped object switches sides, for half it stays Preference Facilitation Study: Puppet Shows Door-opening events Grasped object always where was during the Lost Access Event, only one puppet on stage at a time Preference Facilitation Study: Design • Preference-Knowledge (previously shown) • Grasping one toy and not other (preference inferrable) • Door-Lifters watch (have knowledge of preference) • Preference-NoKnowledge • Grasping one toy and not other (preference inferrable) • Door-Lifters absent (no knowledge of preference) • NoPreference-Knowledge • Grasping only toy available (preference not inferrable) • Door-Lifters watch (have knowledge of (lack of) preference) Preference Facilitation Study: Design Different accounts make different predictions: • Lowest-level (brute physical cues present in stimuli): • Prefer Grasped-Door-Lifter in none (because actions same) or all 3 (if there’s something we’re missing) • Low-level (end-state facilitation w/o mental states): • Prefer Grasped-Door-Lifter in all 3 • Low-Mid-level: First-order goal attribution: • Prefer Grasped-Door-Lifter in Preference-Knowledge and Preference-NoKnowledge • High-Mid-level: