AP Psychology – Attitudes and Persuasion (Elaboration Likelihood Model)

AP Psychology – Attitudes and Persuasion (Elaboration Likelihood Model)

AP Psychology: Attitudes and Persuasion (Elaboration Likelihood Model) – Exam-Ready Study Guide

What This Is

The Elaboration Likelihood Model (ELM) explains how people process persuasive messages and change their attitudes. It proposes two routes to persuasion: the central route (deep thinking, logic-based) and the peripheral route (superficial cues, emotions). This matters on the AP exam because it connects to real-world influence (e.g., advertising, politics) and classic experiments like Petty & Cacioppo’s (1986) study on college students evaluating a new exam policy—those who cared about the topic (high involvement) were persuaded by strong arguments (central route), while those who didn’t care were swayed by the speaker’s credibility (peripheral route).

Key Terms & Concepts

• Elaboration Likelihood Model (ELM): A dual-process theory of persuasion with two routes: central and peripheral.
• Central Route: Persuasion via logical arguments and evidence; leads to long-lasting attitude change (e.g., reading a detailed report on climate science).
• Peripheral Route: Persuasion via superficial cues (e.g., attractiveness, emotions, authority); leads to temporary attitude change (e.g., buying a product because a celebrity endorses it).
• Elaboration: The depth of thinking a person puts into evaluating a message. High elaboration = central route; low elaboration = peripheral route.
• Motivation & Ability: Two factors that determine route choice. Motivation = personal relevance (e.g., caring about a topic); Ability = cognitive resources (e.g., time, knowledge).
• Cognitive Dissonance (Festinger): Mental discomfort when attitudes and behaviors clash (e.g., smoking while knowing it’s harmful). People may change attitudes to reduce dissonance.
• Foot-in-the-Door Phenomenon: Small request first-larger request later (e.g., signing a petition-donating money).
• Door-in-the-Face Phenomenon: Large request (rejected)-smaller request (accepted) (e.g., asking for $100-settling for $10).
• Source Credibility: How trustworthy/expert the messenger seems (e.g., a doctor vs. a celebrity endorsing medicine).
• Message Characteristics: Features like emotional appeal (fear, humor) or two-sided arguments (acknowledging counterarguments).
• Audience Factors: Age, intelligence, and need for cognition (enjoyment of thinking) influence route choice.
• Sleeper Effect: A delayed increase in persuasion from a low-credibility source (e.g., forgetting the source but remembering the message).

Step-by-Step: Applying the ELM to a Persuasive Message

1. Identify the Message & Audience
2. Example: A PSA about recycling targets college students (high motivation) vs. a billboard with a cute animal (low motivation).
3. Assess Motivation & Ability
4. High motivation (e.g., students who care about the environment) + high ability (e.g., time to read)-central route.
5. Low motivation (e.g., distracted drivers) + low ability (e.g., no time)-peripheral route.
6. Determine the Route
7. Central: Focus on strong arguments (e.g., "Recycling reduces landfill waste by 50%").
8. Peripheral: Use cues (e.g., a celebrity, bright colors, emotional music).
9. Predict Attitude Change
10. Central route-durable, resistant to counterarguments.
11. Peripheral route-temporary, easily swayed by new cues.
12. Apply to Real-World Scenarios
13. Example: A political ad with facts (central) vs. a jingle (peripheral).

Common Mistakes

• Mistake: Assuming all persuasion is logical. Correction: The peripheral route relies on emotions and superficial cues, not facts. Why? People often lack time/motivation to think deeply.
• Mistake: Confusing foot-in-the-door (small-large) with door-in-the-face (large-small). Correction: Foot-in-the-door starts small; door-in-the-face starts big to make the real request seem reasonable.
• Mistake: Ignoring audience factors (e.g., age, intelligence). Correction: High "need for cognition" audiences prefer central route; low need = peripheral.
• Mistake: Overlooking sleeper effect (forgetting the source but remembering the message). Correction: Low-credibility sources can become persuasive over time if the message sticks.
• Mistake: Thinking cognitive dissonance only applies to behaviors. Correction: It also applies to conflicting attitudes (e.g., loving animals but eating meat).

AP Exam Insights

1. FRQ Hotspot: Expect a question like: "Explain how the Elaboration Likelihood Model would predict responses to a persuasive message about climate change for two different audiences: high-school students and senior citizens."
2. Key: Compare motivation/ability and route choice for each group.
3. MC Traps:
4. Distractor: "The central route is always more effective." False—it depends on the audience!
5. Distractor: "Peripheral cues are irrelevant to attitude change." False—they work for low-motivation audiences.
6. Tricky Distinction:
7. Central vs. Peripheral Route: Central = logic/evidence; Peripheral = emotions/cues.
8. Classic Experiment Tie-In:
9. Petty & Cacioppo (1986): Students evaluated a new exam policy. High involvement (affected them)-central route; low involvement-peripheral route.

Quick Check Questions

1. MC: A car commercial shows a famous athlete driving the car but provides no details about its features. This is an example of: a) Central route persuasion b) Peripheral route persuasion c) Cognitive dissonance d) Foot-in-the-door technique Answer: b) Peripheral route persuasion. Why? The commercial relies on a superficial cue (celebrity) rather than arguments.

2. FRQ (Short): Explain how the foot-in-the-door phenomenon could be used to persuade someone to volunteer for a charity. Answer: Start with a small request (e.g., signing a petition) to create commitment, then follow up with a larger request (e.g., volunteering). Why? People want to maintain consistency in their self-image.

3. MC: Which of the following is NOT a factor in determining whether someone uses the central route? a) Personal relevance of the topic b) The attractiveness of the speaker c) The person’s ability to process the message d) The strength of the arguments Answer: b) The attractiveness of the speaker. Why? Attractiveness is a peripheral cue, not a central route factor.

Last-Minute Cram Sheet

1. ELM = 2 routes: Central (logic) vs. peripheral (cues).
2. Central route: High motivation/ability-long-lasting change.
3. Peripheral route: Low motivation/ability-temporary change.
4. Petty & Cacioppo (1986): High involvement-central; low involvement-peripheral.
5. Foot-in-the-door: Small-large request.
6. Door-in-the-face: Large (rejected)-small request.
7. Sleeper effect: Low-credibility source becomes persuasive over time.
8. Cognitive dissonance: Discomfort from conflicting attitudes/behaviors.
9. Peripheral-weak: Works for low-motivation audiences!
10. Central-always better: Depends on the audience’s motivation/ability.