UPI Study › Courses › Advanced Social Psychology › Free lessons › Lesson 4.1 Free with a free account
Knowing Yourself Through Action: An Introduction to Self-Perception Theory
Advanced Social Psychology · Chapter 4: The Self and IdentitySection 4.1 · lesson 18 of 8512 min · free with a free account
Free preview
Create a free account to keep watching
It takes a minute and costs nothing. Your free account unlocks all of Chapter 1 and 3 more lessons of Advanced Social Psychology.
Lesson complete
Earn the 3 college credits for Advanced Social Psychology
Enrolling adds a quiz after each lesson, the graded work and the official transcript. Recommended for credit by NCCRS.
Next lesson: Who Am I? Building a Clear Understanding of Self-Concept →← The Discomfort of Contradiction: Cognitive Dissonance in Everyday LifeNext lesson: Who Am I? Building a Clear Understanding of Self-Concept →
In this lesson
Bem's claim that we read our own minds off our own behavior.
- State Bem's two postulates and their boundary conditions
- Separate self-perception from cognitive dissonance
- Explain overjustification, facial feedback, and foot-in-the-door
- Weigh the replication evidence for embodied effects
Free study notes
Get this lesson's notes by email
The key points and 4 practice questions with answers, in your inbox. One email, free.
One email. Unsubscribe in one click.
Transcript
Everything said in the video, section by section (1,638 words). Read along, or search it.
The Self and Identity
Knowing Yourself Through Action
How do you know what you feel? The obvious answer is that you look inward and check. The mind, on this view, has privileged access to its own contents. Daryl Bem spent a career arguing that this is often wrong. Sometimes you work out what you think the same way a stranger would. By watching what you just did, and reading the situation around it. This section turns that claim into a testable theory, with two postulates and real limits. We will set it against cognitive dissonance, and then reconcile the two. Then we will test it against three research programs, one of which has replication trouble. By the end you should know exactly when this theory applies, and when it does not.
The Inversion
You Do Not Simply Look Inward
Start with the folk theory, because Bem's account attacks it directly. You feel something, you consult the feeling, and you report it. Introspection as a kind of internal instrument reading. Bem denied this, in papers of nineteen sixty-seven and nineteen seventy-two. People often infer their internal states by observing their own behavior. And by observing the situation in which that behavior occurred. The striking part is the comparison he draws. You do this in essentially the way an outside observer would. Which means, in those moments, you have no advantage over a stranger. So behavior stops being the expression of an attitude you already knew. It becomes the evidence from which the attitude gets inferred.
Two Postulates
Bem's Formal Statement
Bem stated the theory formally, in two postulates. The first is behavioral inference. People come to know their own attitudes and emotions partially by inferring them. Inferring them from their own overt behavior, and the circumstances around it. Notice the word partially, because a great deal rides on it. Bem is not claiming that introspection never works. He is claiming it fails often enough to leave a gap that something must fill. The second postulate is functional equivalence, and it names that gap. When internal cues are weak, ambiguous, or uninterpretable, something changes. The individual is then in the same position as an outside observer. Both are working from the same external cues, with no private channel available. That is the whole theory, compressed into two sentences.
Boundary Conditions
When the Inference Is Allowed to Run
A theory that applies everywhere predicts nothing. So the useful part of Bem's account is the place where it stops. Two boundary conditions decide whether the inference is allowed to run at all. First, the behavior must be perceived as freely chosen. Behavior visibly coerced by reward, threat, or social pressure is not diagnostic. If someone paid you to say it, saying it tells you nothing about yourself. Second, the prior attitude must be weak, ambiguous, or unestablished. Where a person already holds a strong, well-rehearsed attitude, that attitude wins. It drives the self-report, and the behavior is simply ignored as evidence. Miss either condition and the theory predicts no attitude change at all. Self-perception is not a universal law of introspection. It fills a specific gap.
The Rival
Self-Perception Versus Cognitive Dissonance
There is a rival account of the same phenomenon, and you already know it. Festinger published cognitive dissonance theory in nineteen fifty-seven. Performing a counter-attitudinal behavior creates aversive arousal. The person reduces that arousal by changing the attitude to match the act. Both theories predict the same end-state, attitude change following behavior. But the machinery underneath is completely different. Dissonance requires motivational tension, an unpleasant state that demands relief. Self-perception denies any tension at all. It is cool inference, not hot discomfort. The person simply looks at what they did and draws a conclusion. One theory says you were uncomfortable. The other says you were merely observant.
The Truce
Both Are Right, in Different Territory
For years these were treated as competitors, and the argument was fierce. Then Fazio, Zanna, and Cooper published a reconciliation in nineteen seventy-seven. Their answer was that both theories are partly correct. What matters is where the behavior sits relative to your latitude of acceptance. The latitude of acceptance is the range of positions you find tolerable. When behavior falls outside that range, dissonance processes dominate. The act is genuinely discrepant, arousal follows, and the attitude moves to relieve it. When behavior falls inside the range, self-perception processes dominate instead. Nothing feels wrong, so no arousal is generated at all. The person simply reads the act as mild evidence about themselves. So the two are complementary rather than rival, and each owns a region. Naming which mechanism a given study invoked is an advanced-level skill.
Evidence One
Overjustification: Paying for Play
The first line of evidence comes from a field experiment with preschoolers. Lepper, Greene, and Nisbett ran it in nineteen seventy-three. They found children who already enjoyed drawing with felt-tip markers. The key word is already. The interest was there before the study began. Children were randomly assigned to one of three conditions. The expected-reward group was told in advance about a Good Player certificate. The unexpected-reward group got the same certificate, but as a surprise afterward. The control group simply drew, with no reward at all. Two weeks later, during free-play, only the expected-reward children drew significantly less. The reward had damaged the very interest it was meant to encourage. Self-perception explains it as discounting, in Kelley's nineteen seventy-three sense. The child reasons, I am drawing because I am being paid. Deci, Koestner, and Ryan confirmed the pattern meta-analytically in nineteen ninety-nine.
Evidence Two
Facial Feedback, and What Replication Did to It
The second line of evidence pushes the logic from attitudes to emotions. If you infer what you believe from what you do, can you infer what you feel? Strack, Martin, and Stepper tested this in nineteen eighty-eight. Participants held a pen either between their teeth, or between their lips. Holding it in the teeth forcibly engages the smiling musculature; the lips block it. Neither posture is a smile the person chose to make. The teeth group rated cartoons as funnier. Read as the brain interpreting its own facial signal, then inferring the matching feeling. Then came the complication, in twenty sixteen. Wagenmakers and colleagues ran a large multi-site Registered Replication Report. It failed to reproduce the original effect, and the debate is still live. But Coles, Larsen, and Lench meta-analyzed one hundred thirty-eight studies in twenty nineteen. They found a small but reliable facial-feedback effect after all. So the logic stays powerful, but the size of any embodied effect is an empirical question.
Evidence Three
Foot-in-the-Door as Identity Revision
The third line of evidence is the one salespeople already know. Freedman and Fraser demonstrated it in nineteen sixty-six. Agreeing to a small request sharply raises compliance with a much larger one later. The small request was signing a petition about safe driving. Almost nobody refuses that, because it costs nothing. The larger request came later, and it was genuinely costly. Would you allow a large, ugly sign to be erected on your lawn? Compliance with that second request rose substantially. Self-perception reads the whole sequence as identity revision. After signing, the participant infers something about the kind of person they are. I am the sort of person who supports this cause. Then they behave accordingly, as Burger noted in nineteen ninety-nine. The self-description changes first, and the behavior follows it. And note the boundary condition holding it up. The first act must feel freely granted.
Extensions
Misattribution and the Two-Factor Self
Self-perception has a close cousin, and the family resemblance is instructive. Schachter and Singer proposed two-factor theory of emotion in nineteen sixty-two. Emotional experience requires two ingredients, not one. Physiological arousal, plus a cognitive label drawn from situational cues. Both frameworks treat the self as an interpreter. It labels an ambiguous internal signal by reading the environment around it. Dutton and Aron gave this its most famous demonstration, in nineteen seventy-four. Men were interviewed by an attractive female experimenter. Some were on a high suspension bridge; others were on a stable one. The suspension-bridge men were more likely to contact her afterward. The reading is that they misattributed arousal from fear to romantic attraction. The body was pounding, and the situation supplied the wrong label. Later work extends this to posture, gaze, and gesture. Cuddy, Schultz, and Fosse revisited posture effects in twenty eighteen. Effect sizes here have been revised downward since the replication crisis. The unifying thesis survives. When the inner signal is silent, the body speaks for it.
Critiques
Three Limits Worth Holding
Three critiques have shaped how this theory is now received. None of them retires it. Each one narrows what it is allowed to claim. The first is under-specification, and it is the sharpest. The theory never says in advance when internal cues count as weak or ambiguous. Without a metric fixed beforehand, you can fit the theory to any result afterward. That is a real methodological worry, not a technicality. The second critique comes from neuroimaging, and from Lieberman in two thousand seven. Introspection and self-perception engage overlapping but distinguishable neural systems. Which implies Bem described one route to self-knowledge, not the only route. The third critique is cultural, from Markus and Kitayama, and later from Heine. Members of interdependent cultures may weight situational and relational cues more heavily. Despite all three, the theory remains a touchstone in the field. It anticipated decades of work on embodiment, implicit attitudes, and identity-based intervention.
Consolidate
A Precise Tool, Not a Theory of Everything
So how should you actually carry this theory forward? Not as a global account of how minds come to know themselves. Use it as a precise tool for one class of cases. The cases where behavior outruns introspection. Five terms are worth fixing before you move on. Self-perception theory itself, with both of its boundary conditions attached. The overjustification effect, where a reward eats the interest it was meant to feed. The facial feedback hypothesis, and the replication history that goes with it. The foot-in-the-door technique, understood as an edit to identity. And misattribution of arousal, where the body is right and the label is wrong. One habit to take into the rest of this chapter. When someone reports an attitude, ask what behavior they might be reading it from.
About Advanced Social Psychology at UPI Study
Advanced Social Psychology (Psychology 310) is a self-paced online course of 85 video lessons in 12 chapters, from attitudes, persuasion and the self to prejudice, attraction and relationships, conformity and obedience, helping, aggression and social life online. It carries a NCCRS credit recommendation for 3 semester credits.
Every lesson transcript is free on pages like this one, and the videos are free with a free UPI Study account. Enrolling adds a practice quiz after each lesson, the graded work and final exam that earn the credit, lifetime access, and an official transcript on completion. UPI Study has helped over 130,000 students with college credits. ACE and NCCRS have over 2,100 cooperating colleges that will consider accepting credits; the final decision is with the universities.
Enroll now → Course details Download the syllabus All Psychology and social science courses Every course with PRO →
Compare: Social Psychology vs Sociology
Why take it here
Why students take Advanced Social Psychology with UPI Study
Where the credit goes
Universities that work with NCCRS
Advanced Social Psychology carries a NCCRS credit recommendation. These universities work with NCCRS; some are UPI Study's signed partners. ACE and NCCRS have over 2,100 cooperating colleges that will consider accepting credits; the final decision is with the universities.
Thomas Edison State UniversitySigned partner
University of the PeopleSigned partner
Charter Oak State CollegeSigned partner
Strayer UniversitySigned partner
Columbia Southern UniversitySigned partner
Indiana TechSigned partner
Penn StateWorks with NCCRS
Southern New Hampshire UniversityWorks with NCCRS
SUNYWorks with NCCRS
+many more cooperating universitiesFind my college →Find my college → Not listed? Ask Athena in the corner of this page, or book a 15-minute call.
FAQ
Questions students ask us
About Knowing Yourself Through Action: An Introduction to Self-Perception Theory
What is self-perception theory?
What is the difference between self-perception theory and cognitive dissonance theory?
What is the overjustification effect?
Has the facial feedback hypothesis been replicated?
About the Advanced Social Psychology course
How many college credits is Advanced Social Psychology?
How much does Advanced Social Psychology cost and what is included?
Which universities accept UPI Study credits?
How long does Advanced Social Psychology take?
How are the exams done?
How do my credits reach my college?
Ready for the full course? Earn 3 credits in Advanced Social Psychology.
85 video lessons, a quiz after each one, and the graded work that earns the credit. Recommended for credit by NCCRS.
3 credits · NCCRSEnroll →