Home › Courses › Social Psychology Course

Free Social Psychology Course: 8 Lessons About People and Groups

Explore how people and situations shape behavior through eight free lessons. Follow a fictional workshop committee, compare explanations, and check what the evidence supports. Compare longer courses after the introduction.

8 lessonsProgress in this browser
Five adults at a round table, four leaning toward one object while one looks at it from another angle

By the end you can...

  • Distinguish an observation from a personal or situational explanation.
  • Compare agreement based on acceptance with agreement based on information.
  • Explain why counting helpers and counting helped events gives different answers.
  • Rewrite a research claim to match its sample and design.

Eight lessons on situations, influence, groups and reading research, taught through fictional adult scenes and worked exercises.

Start the course

Work through eight free lessons, then use the concept checks and worked exercises to test an explanation. This introduction is for adults and requires no prior study. Work at your own pace, or compare longer courses.

1

People and situations

4 min

By the end you can propose a situational explanation alongside a personal explanation of behavior.

A quiet participant listens while a committee chair presents an arrangement of blank cards.
ObservationSomething recorded about what happened. (source)
Situational explanationAn account emphasizing the circumstances around behavior. (source)

Social psychology studies people in social contexts. Both personal characteristics and situations can contribute to an explanation.

In the fictional committee, silence is observable; its reason remains open. A useful next question asks what evidence would distinguish explanations. A different meeting format could offer a comparison, but it would not reveal a person's entire character. Start by describing the behavior precisely.

What was observed

  • Omar said little during the meeting.

Possible explanations

  • He may prefer listening.
  • The finished plan may leave little room to contribute.
Two hypotheses about a fictional meeting. Silence does not establish either explanation. (source)

One meeting, several explanations

Omar says little after the chair presents a finished plan. Compare his participation in an open discussion and ask whether other members also had few chances to speak. These are ways to investigate the explanation, not conclusions about Omar. Source

Quick check: Which sentence is an observation rather than an explanation?

Show the answer

Answer: Omar said little during the meeting

The sentence records behavior. The other statements propose reasons that the observation alone does not establish. (source)

Try it

Omar stays quiet during the committee meeting. Write one observation, one personal explanation, and one situational explanation without treating either explanation as established.

Show the answer

The observation is that Omar said little. A personal explanation is that he was not interested in the proposal. A situational explanation is that the chair's finished plan discouraged contributions. Neither follows necessarily from silence. Asking how he behaves in a discussion with an open agenda could help distinguish them. The aim is to expand the explanation, not replace one unsupported certainty with another.

Takeaway: Keep what happened separate from why it might have happened. (source)

Source: Spielman, R. M., Jenkins, W. J., and Lovett, M. D. (2020). Psychology 2e: What Is Social Psychology?. OpenStax.

2

Explaining other people's behavior

4 min

By the end you can revise an attribution after receiving relevant situational information.

An organizer holds up a phone beside a closed meeting-room door while a visitor holds a floor plan.
AttributionAn explanation for behavior. (source)
Dispositional attributionAn account emphasizing characteristics of the person. (source)
Fundamental attribution errorOverweighting personal explanations while overlooking circumstances; the tendency varies. (source)

Attribution concerns explanations for behavior. The fundamental attribution error describes placing too much weight on personal characteristics while overlooking circumstances; its expression varies across contexts and cultures.

Relevant new information can change what a behavior tells us. In Lina's case, the narrow question and damaged keyboard matter to a short reply. Her favorite music would not explain the typing constraint. Revise the inference, while preserving what remains unknown.

  1. ObserveA one-word reply
  2. InferThe colleague guesses hostility
  3. Add contextA narrow question and damaged keyboard
  4. ReviseThe reply gives weaker evidence about attitude
A fictional inference being revised, not a sequence that proves anyone is considerate or hostile. (source)

A reply with missing context

Lina replies "No" to a room-availability question. Learning that her keyboard is damaged makes the brief wording less informative about hostility. It does not prove the opposite attitude. Source

Quick check: What does the damaged keyboard change in this example?

Show the answer

Answer: It weakens the inference from brevity to hostility

The reply remains brief. A relevant constraint changes the strength of the proposed explanation, not the observed wording. (source)

Try it

Revise "Lina is hostile because she replied No" after learning about the narrow question and damaged keyboard. State what remains unknown.

Show the answer

A more careful account is: "The brief reply may reflect the question and typing constraint, so it gives weak evidence about hostility." Lina's attitude toward the colleague remains unknown. The situational information weakens the first inference without proving its opposite. A longer exchange or information about comparable interactions could be relevant. The revision changes the strength of the conclusion rather than assigning a new personality label.

Takeaway: New context can weaken an inference without proving its opposite. (source)

Source: Spielman, R. M., Jenkins, W. J., and Lovett, M. D. (2020). Psychology 2e: What Is Social Psychology?. OpenStax.

3

Conformity

4 min

By the end you can distinguish seeking social acceptance from seeking useful information.

Workshop participants consider a shared estimate while one reviews registration cards.
Normative influenceChanging a response to fit in or avoid disapproval. (source)
Informational influenceUsing other people as evidence about what is correct. (source)

Conformity can reflect acceptance, information, or both. Identify the stated reason for agreement instead of inferring a stable trait.

Franzen and Mader (2023) replicated and extended an Asch line task. Accuracy incentives reduced errors, but social influence remained in their student sample. The finding does not supply a fixed rate for every community. In the fictional committee below, trusting informed colleagues differs from simply reading records yourself.

Seeking acceptance

  • Bea repeats sixty to avoid disapproval.

Trusting relevant knowledge

  • Cal trusts members who checked registrations.
Fictional stated reasons. Reading registrations directly is evidence use; trusting informed others illustrates informational social influence. (source)
Quick check: Cal trusts the estimate because colleagues checked registrations. Which process does this illustrate?

Show the answer

Answer: Informational influence

Cal relies on other people for relevant knowledge. This differs from repeating an estimate solely to avoid disapproval. (source)

Try it

Bea repeats sixty to avoid disapproval. Cal chooses sixty because he trusts members who checked registrations. Which reason illustrates normative influence, and which illustrates informational influence?

Show the answer

Bea seeks acceptance, illustrating normative influence. Cal relies on other people for relevant knowledge, illustrating informational influence. Reading registrations directly would instead be direct evidence use. The same public number can follow different processes; the quality of the underlying information still matters.

Takeaway: The same public answer can arise for different reasons. (source)

Source: Franzen, A., and Mader, S. (2023). The power of social influence: A replication and extension of the Asch experiment. PLOS ONE, 18(11), e0294325.

4

Helping and the bystander effect

4 min

By the end you can distinguish an individual's likelihood of helping from whether anyone helps.

Adults prepare a workshop while one participant carries a projector into the room.
Diffusion of responsibilityResponsibility may feel shared when several people could act. (source)
Unit of analysisWhat is being counted, such as people or events. (source)

The bystander effect concerns an individual's likelihood of helping when others are present. Whether anyone helps at an event is a different outcome.

Philpot and colleagues (2020) observed help in about nine out of ten recorded public conflicts across three countries. Selected footage and setting limit generalization; this was not a direct laboratory replication. The invented workshop records below explain denominators, without estimating real helping rates.

10 of 50 observer occasions highlighted.

Invented records: 2 of 10 observers help at each of 5 events. Ten of 50 observer occasions involve help; all 5 events receive it. This alone does not demonstrate a bystander effect. (source)

Twenty percent and one hundred percent

In the invented records, each of five events receives help from two of ten observers. That is 10 divided by 50 observer occasions, or 20%, and 5 divided by 5 events, or 100%. Both descriptions fit the same records. Source

Quick check: Why do these invented records fail to demonstrate a bystander effect?

Show the answer

Answer: There is no comparison with people alone or in smaller groups

The counts distinguish outcomes but do not compare helping under different group sizes. They cannot isolate the presence-of-others effect. (source)

Try it

In fictional records, 2 of 10 observers help at each of 5 events. What proportion of observer occasions involve helping, and what proportion of events receive help?

Show the answer

Across the records, 10 of 50 observer occasions involve helping, or 20%. All five events receive help, or 100%. These figures answer different questions and can both be correct. They do not demonstrate a bystander effect, because there is no comparison with people alone or in smaller groups. They show why a low individual rate does not necessarily mean that an event receives no help.

Takeaway: Name the unit before comparing helping rates. (source)

Source: Philpot, R., Liebst, L. S., Levine, M., Bernasco, W., and Lindegaard, M. R. (2020). Would I be helped? Cross-national CCTV footage shows that intervention is the norm in public conflicts. American Psychologist, 75(1), 66-75.

Practice this in Learn: Bystander effect

5

Attitudes and persuasion

4 min

By the end you can distinguish an argument's evidence from a cue about its presentation.

A committee compares venue equipment with a portrait of an admired presenter.
Central routeEngaging with the substance of an argument. (source)
Peripheral routeRelying more on cues surrounding an argument. (source)

Persuasion can involve examining an argument or relying on surrounding cues. These are ways of processing messages, not fixed types of people.

The fictional pitch below mixes practical claims with a famous host's approval. Capacity and equipment need checking. The host might have relevant expertise, and a chart might impress without being examined. Neither message format nor agreement alone identifies the process that changed an evaluation.

Claims to verify

  • The venue seats 80.
  • Microphones are included.

Presentation cue

  • A famous host approves of the venue.
Fictional venue pitch. A cue is not automatically irrelevant, and a polished chart does not prove careful processing. (source)
Quick check: Which question most directly checks the venue against an equipment requirement?

Show the answer

Answer: Does the rental include microphones?

The microphone claim concerns the stated requirement. Its relevance still does not make it verified. (source)

Try it

A venue pitch says: "Our famous host loves it. It seats 80, and the rental includes microphones." Separate the presentation cue from decision-relevant claims.

Show the answer

The famous host's approval is a cue that could influence agreement without supplying the needed venue details. Seating and microphone claims bear directly on the committee's requirements, although they still need checking. Approval could matter for another purpose, such as attracting attendees. Calling it a cue does not make it worthless; the question is what evidence supports the particular decision and how the listener uses it.

Takeaway: Separate a claim about the decision from a cue about its presentation. (source)

Source: Spielman, R. M., Jenkins, W. J., and Lovett, M. D. (2020). Psychology 2e: Attitudes and Persuasion. OpenStax.

6

Group decisions

4 min

By the end you can distinguish group polarization from pressure to suppress disagreement.

A committee discusses a venue model while a participant offers an alternative arrangement.
Group polarizationA shift toward a stronger version of the group's initial leaning. (source)
GroupthinkPrioritizing agreement at the expense of critical evaluation. (source)

Group polarization and groupthink concern different features of group decisions. One describes a shift in leaning; the other concerns agreement displacing scrutiny.

A committee may become more enthusiastic after learning useful new information. To inspect its process, ask whether alternatives were examined and objections heard. The matrix separates those observations. It is a conceptual comparison, not a way to assign a group a score or guarantee a correct decision.

Objections considered: top row Yes, bottom row No. Preference after discussion: left Similar, right Stronger.

Yes and Similar
Scrutiny without a stronger preference
Yes and Stronger
Stronger preference with scrutiny
No and Similar
Little scrutiny; no stronger preference required
No and Stronger
Stronger preference and little scrutiny
Illustrative combinations, not scores. Top row: objections considered. A stronger initial leaning fits polarization; agreement alone does not establish groupthink. (source)

Inspect the discussion, not just the vote

A committee favors a venue more strongly after discussion and records each objection with a response. The stronger preference fits polarization. The record supplies evidence of scrutiny, although its responses could still be weak. Source

Quick check: Which observation most directly suggests pressure against critical evaluation?

Show the answer

Answer: The chair rejects questions because they would break team spirit

The chair explicitly blocks scrutiny to preserve harmony. A stronger preference or unanimous vote alone does not show that process. (source)

Try it

A committee becomes more enthusiastic after discussion and records every objection with a response. Does stronger agreement alone establish groupthink? Explain.

Show the answer

No. Stronger enthusiasm may fit polarization, but it does not establish that maintaining harmony displaced critical evaluation. Recording and addressing objections supplies evidence of scrutiny, though the responses could still be weak. To evaluate the process, inspect the objections, the evidence considered, and whether alternatives received fair attention. The outcome and the way it was reached are separate things to examine in this case.

Takeaway: A stronger preference and suppressed disagreement are different observations. (source)

Source: Spielman, R. M., Jenkins, W. J., and Lovett, M. D. (2020). Psychology 2e: Conformity, Compliance, and Obedience. OpenStax.

7

Stereotypes and social categories

4 min

By the end you can distinguish a group belief, a negative attitude, and unequal behavior.

An organizer compares blank volunteer folders beside boat and fruit team symbols.
StereotypeA generalized belief about a group. (source)
PrejudiceA negative attitude based on group membership. (source)
DiscriminationUnequal behavior toward someone on the basis of group membership. (source)

Stereotypes, prejudice, and discrimination concern belief, attitude, and behavior. They can be related without one serving as a complete measure of another.

The invented Harbor and Orchard teams make the distinctions visible without labeling a real community. Even a positive-sounding generalization can bypass individual evidence. Inspect the reason for the selection decision and identify the missing comparison.

Belief and attitude

  • Stereotype: all Harbor volunteers are disorganized.
  • Prejudice: dislike based on the Harbor label.

Behavior

  • Discrimination: excluding a suitable applicant solely for the Harbor label.
Fictional teams separate three concepts. These statements do not establish traits of any real group. (source)

A flattering label still skips evidence

Calling every Orchard volunteer a natural leader does not establish one applicant's experience. Compare the applicant with the role requirements. The problem is the unsupported generalization, not proof that this applicant lacks ability. Source

Quick check: Which part of the fictional Harbor example is behavior?

Show the answer

Answer: Excluding the applicant solely for the team label

Exclusion is an action. The other statements concern a generalized belief and a negative attitude. (source)

Try it

"Orchard members are natural leaders, so I will choose this applicant without reading their experience." Identify the generalization and a relevant missing comparison.

Show the answer

The stereotype is the claim that all Orchard members naturally lead well. The decision substitutes team membership for evidence about this applicant. A relevant comparison would examine each applicant's experience against the same role requirements. The flattering wording does not remove the overgeneralization. It also does not establish that the chosen person lacks ability; the problem is that the stated reason fails to demonstrate it.

Takeaway: A group label does not establish an individual's suitability. (source)

Source: Spielman, R. M., Jenkins, W. J., and Lovett, M. D. (2020). Psychology 2e: Prejudice and Discrimination. OpenStax.

8

Reading social psychology research

4 min

By the end you can identify a study's sample, comparison, outcome, and limit.

Two adults compare attendance cards and possible explanations at a library table.
Observational studyRecords relationships without assigning the conditions of interest. (source)
ReplicationRepeating a study to examine whether a finding recurs under specified conditions. (source)

Research methods determine what a claim can support. Ask who participated, what was compared, and what was measured before interpreting a relationship.

Replication examines whether a finding recurs under specified conditions. The student sample in Franzen and Mader and the public-conflict footage in Philpot and colleagues answer different bounded questions. The final exercise asks you to preserve a survey finding while removing a causal claim the design cannot establish.

  1. SampleWhich adults were studied?
  2. DesignAttendance was not assigned
  3. OutcomeAttendance and reported connection
  4. LimitDirection and other influences remain open
A reading checklist for the fictional meeting survey, not a causal chain. (source)

A headline the design can support

Replace "Meetings create belonging" with "Among the adults studied, more attendance was associated with greater reported connection." Adults who already felt connected might have attended more. Source

Quick check: Which conclusion fits the fictional observational study?

Show the answer

Answer: Attendance and reported connection were associated in this sample

The study describes an association. It does not settle direction of influence or establish a universal causal effect. (source)

Try it

Rewrite "Meetings create belonging" for the fictional observational study. Include the measured relationship and one unresolved alternative explanation.

Show the answer

A defensible version is: "Among the adults studied, more meeting attendance was associated with greater reported connection to neighbors." People who already felt connected might have attended more often. That alternative remains possible because attendance was not assigned. The revised statement retains the finding while removing an unsupported causal conclusion. A report should also describe recruitment and measurement before extending the result to other communities.

Takeaway: Match the strength of the claim to the comparison actually made. (source)

Source: Spielman, R. M., Jenkins, W. J., and Lovett, M. D. (2020). Psychology 2e: Analyzing Findings. OpenStax.

Apply the ideas to one everyday situation

Apply the ideas by revisiting the workshop committee: Omar is quiet, Bea follows the majority, and nobody answers the projector request. Write an observation and two possible explanations for each. A model response considers speaking opportunities, acceptance or information, and unclear responsibility alongside unread messages. Attribution and bystander research guide questions, not personality verdicts. Continue with conformity practice, the bystander mini course, cognitive psychology, or health psychology.

Compare longer courses

Pick a broad online sequence, a focused political application, or a scheduled college subject.

Follow a broad online sequence

Wesleyan University / Coursera, Social Psychology

For
For beginners exploring people and groups (source)
Time
7 modules; 4 weeks at 10 hours per week (source)
Access
Paid access described; free completion not established (source)

Read the access terms before enrolling

Explore a political application

The Open University / OpenLearn, Social psychology and politics

For
For intermediate study of social psychology and politics (source)
Time
8 study hours (source)
Access
Free; an account adds progress tracking (source)

Open the course outline

Join a scheduled subject

Harvard Division of Continuing Education, Introduction to Social Psychology, PSYC E-1050

For
For readers seeking web conferences or recordings (source)
Time
Fall 2026; August 31 to December 19; Monday sessions (source)
Access
Paid tuition (source)

Check whether late registration is possible

See the full comparison
Checked 2026-11-04. Facts read on each provider's own page; Psychology.com is not a degree program.
Provider and offeringTypeScopeAudienceAccessWorkloadEntry requirementsAssessmentAvailability
Wesleyan University / Coursera
Social Psychology
short coursePerception, persuasion, groups, attraction, and helpingUS; beginnerPaid access described; free completion not established7 modules; 4 weeks at 10 hours per weekNo prior experience required5 assignments listedEnrollment offered
The Open University / OpenLearn
Social psychology and politics
free resourceIdentity, personality, culture, and political actionUK; intermediateFree course; account adds progress tracking8 study hoursnot statedConsolidation quizzes and activitiesOpen online resource
Harvard Division of Continuing Education
Introduction to Social Psychology, PSYC E-1050
university subjectSocial perception, relationships, aggression, and helpingUS; web conference or recordingsPaid tuitionFall 2026, August 31 to December 19; Monday sessionsnot statednot statedSection marked open; already underway; late registration not stated
What do you learn in social psychology?

You study how people interpret one another, respond to groups, form attitudes, and act in social situations. This course emphasizes explanations and evidence rather than personality labels. OpenStax introduces those topics; each exercise here asks you to apply one distinction to a fictional adult situation. (source)

Is social psychology a science?

It uses systematic observations, experiments, and explicit measures to investigate questions about social behavior. The strength of a conclusion depends on its design and evidence. Lesson 8 uses OpenStax research methods to distinguish an observed association from a causal claim and to explain why replication matters. (source)

Can I take a free social psychology course online?

Yes. Every lesson and worked answer here is free, and OpenLearn offers the narrower Social psychology and politics resource. The Wesleyan course has a substantial syllabus, but its access FAQ does not establish free completion. Harvard's listed subject charges tuition. Check each route's current terms. (source 1, source 2, source 3)

How is social psychology different from sociology?

Social psychology commonly examines individuals thinking and acting in social contexts; sociology often emphasizes social structures and institutions. Their questions overlap. The Jindal introductory module in Sources makes this distinction, while OpenLearn's political course illustrates how social questions can cross disciplinary boundaries. (source 1, source 2)

Where to go next

Sources

  1. Spielman, R. M., Jenkins, W. J., and Lovett, M. D. (2020). Psychology 2e: What Is Social Psychology?. OpenStax.
  2. Spielman, R. M., Jenkins, W. J., and Lovett, M. D. (2020). Psychology 2e: Conformity, Compliance, and Obedience. OpenStax.
  3. Franzen, A., and Mader, S. (2023). The power of social influence: A replication and extension of the Asch experiment. PLOS ONE, 18(11), e0294325.
  4. Spielman, R. M., Jenkins, W. J., and Lovett, M. D. (2020). Psychology 2e: Aggression. OpenStax.
  5. Philpot, R., Liebst, L. S., Levine, M., Bernasco, W., and Lindegaard, M. R. (2020). Would I be helped? Cross-national CCTV footage shows that intervention is the norm in public conflicts. American Psychologist, 75(1), 66-75.
  6. Spielman, R. M., Jenkins, W. J., and Lovett, M. D. (2020). Psychology 2e: Attitudes and Persuasion. OpenStax.
  7. Spielman, R. M., Jenkins, W. J., and Lovett, M. D. (2020). Psychology 2e: Prejudice and Discrimination. OpenStax.
  8. Spielman, R. M., Jenkins, W. J., and Lovett, M. D. (2020). Psychology 2e: Analyzing Findings. OpenStax.
  9. Wesleyan University and Coursera. Social Psychology. Course information, checked November 4, 2026.
  10. The Open University. (2019). Social psychology and politics. OpenLearn. Course information, checked November 4, 2026.
  11. Harvard Division of Continuing Education. Introduction to Social Psychology, PSYC E-1050. Fall 2026 course information, checked November 4, 2026.
  12. O.P. Jindal Global University and Coursera. Social Psychology: Introduction to social psychology module.
  13. Psychology.com. Learn: public track and access information. Opened November 4, 2026.
  14. Psychology.com. Courses: course and mini course catalog. Opened November 4, 2026.

Cite this source

Psychology.com. (2026, November 4). Social Psychology Course. Psychology.com. https://psychology.com/courses/social-psychology