AP Psychology 2.1-2.2: Perception and Thinking

Cognitive bias

A systematic pattern of deviation from rational judgment or an accepted norm. It can produce predictable errors, but some biases can also support fast or adaptive decisions.

Why can cognitive biases influence behavior even when objective information is unchanged?

People respond to their subjective interpretation of input rather than directly to objective reality. That constructed interpretation can shape perception, judgment, and action.

What are heuristics, and why can they produce cognitive biases?

Heuristics are mental shortcuts used to make rapid estimates or decisions under uncertainty. They reduce mental effort but can systematically ignore or overvalue certain information.

What is bounded rationality?

The idea that decision-making is limited by incomplete information, finite time, restricted mental capacity, and computational constraints. People therefore often use satisfactory shortcuts rather than fully optimizing.

Availability heuristic

Estimating the likelihood of an event by how easily examples come to mind. Vivid, unusual, recent, or emotionally charged examples are often disproportionately available.

Representativeness heuristic

Judging the probability or frequency of an event by how much it resembles a typical example. This can cause people to overlook base rates and statistical relationships.

Anchoring heuristic

Relying too heavily on an initial value or reference point and failing to adjust sufficiently when later information is provided.

Affect heuristic

Making a judgment primarily from an immediate emotional reaction instead of carefully comparing risks, benefits, or probabilities.

What is attribute substitution?

It is the unconscious replacement of a difficult judgment with an easier one. For example, a person may answer whether someone is successful by substituting the easier question of whether that person appears confident.

Why might a cognitive bias be adaptive rather than simply irrational?

A shortcut may produce sufficiently accurate decisions quickly, especially when time is more valuable than perfect accuracy. Its usefulness depends on the environment and the costs of different errors.

Adaptive-bias perspective

A view that natural selection may favor predictable errors when one type of mistake is less costly than another. A bias can therefore reflect an efficient tradeoff rather than a general reasoning failure.

What is the central disagreement in the 'rationality war' over heuristics and biases?

One view treats biases mainly as systematic defects that depart from rational choice. Another argues that many heuristics are ecologically rational rules that work well in the environments where they evolved or are used.

Conjunction fallacy

The error of judging a combination of events as more likely than one of its individual components. Since the probability of a conjunction cannot exceed the probability of either component, this violates basic probability.

How does the Linda problem demonstrate the conjunction fallacy?

A description that makes someone seem representative of a feminist may lead people to choose 'bank teller and feminist activist' over 'bank teller.' The combined description is statistically less likely, even if it seems more representative.

Priming bias

The tendency for an initial presentation, cue, or framing of an issue to shape later interpretations and judgments.

Framing effect

The tendency for different descriptions of the same underlying choice or problem to produce different judgments or decisions.

How does anchoring differ from framing?

Anchoring involves excessive influence from an initial numerical or conceptual reference point. Framing involves different responses caused by how equivalent information or options are presented.

Confirmation bias

The tendency to seek, interpret, and remember information in ways that support existing beliefs while discounting conflicting evidence.

Belief bias

Evaluating an argument's logical strength according to whether its conclusion seems believable, rather than according to the validity of its reasoning.

Fundamental attribution error

The tendency to explain other people's behavior mainly through personality or character while underestimating situational pressures. The same person may account for their own behavior more situationally.

Self-serving bias

The tendency to take greater credit for successes than for failures and to interpret ambiguous information in ways that protect one's interests or self-image.

Hindsight bias

The tendency to see an outcome, after learning it, as having been more predictable than it actually was—the 'I knew it all along' effect.

Loss aversion

The tendency for potential losses to have a stronger psychological impact than equivalent gains. It helps explain resistance to changing an existing situation.

Status quo bias

A preference for maintaining the current state or selecting a default option rather than changing, often because change is associated with risk or potential loss.

Overconfidence effect

The tendency to overestimate one's knowledge, abilities, accuracy, or control when making judgments and decisions.

Halo effect

The tendency for one favorable impression of a person, product, or group to spill over into unrelated evaluations. For example, a positive experience with one brand product may improve evaluations of another.

Implicit bias

An automatic or insufficiently conscious tendency to associate positive or negative qualities with a person or social group. Such associations may produce stereotypes or unfair generalizations.

In-group bias and out-group homogeneity bias

In-group bias favors one's own group, while out-group homogeneity bias treats members of another group as more alike than they really are. These biases can distort judgments of group quality and diversity.

False consensus effect

The tendency to overestimate how widely one's own beliefs, preferences, or behaviors are shared by others.

What is the difference between hot and cold cognitive biases?

Cold biases arise mainly from information-processing limitations, such as anchoring or neglecting probability. Hot biases are strongly influenced by motivation, emotion, arousal, or the desire to protect one's self-image.

Embodied cognition

The idea that bodily state and biological conditions can influence perception, attention, motivation, decision-making, and interpretation.

What theoretical mechanisms can produce cognitive biases?

Proposed mechanisms include bounded rationality, evolutionary adaptations, mental accounting, emotional motivation, social influence, attribution processes, cognitive dissonance, and limited or noisy information processing.

What does noisy information processing imply about memory-based judgments?

Errors can arise as information is stored, retrieved, and converted from observations into subjective estimates. The same underlying noise may help generate several apparently different biases, including overconfidence and illusory correlations.

How can cognitive biases encourage pseudoscientific beliefs?

Confirmation bias can make people seek evidence supporting a preconception, while availability and representativeness can make vivid or plausible claims seem more credible. As a result, insufficient evidence may feel persuasive.

How do cognitive biases contribute to the spread of misinformation?

Information that confirms existing beliefs is more readily accepted, and emotionally vivid claims are easier to recall and share. Confirmation and availability processes can therefore accelerate the circulation of false narratives.

What practical fields are especially affected by cognitive bias?

Biases influence decisions in medicine, law, finance, management, entrepreneurship, education, and clinical judgment. Overconfidence, anchoring, framing, and confirmation bias are especially recurrent concerns.

Why is confirmation bias problematic in legal or investigative decisions?

Investigators may favor evidence supporting an initial theory and dismiss contradictory evidence. This can distort case evaluation and make an incorrect hypothesis increasingly resistant to revision.

Debiasing

The reduction of systematic errors in judgment and decision-making through methods such as training, incentives, structured procedures, and carefully designed choice environments.

What is the role of controlled processing in debiasing?

Controlled processing is slower, more deliberate, and more analytical than automatic processing. Encouraging it can help people check intuitive answers, consider neglected evidence, and correct predictable errors.

Reference class forecasting

A debiasing method that estimates a case by comparing it with outcomes from a relevant class of similar cases. It emphasizes the 'outside view' instead of relying only on an internal narrative about the specific case.

How can accountability and structured checklists reduce attribution errors?

Requiring people to justify their judgments and consider alternative explanations encourages more controlled processing. Checklists can prompt attention to situational factors and reduce reliance on an initial impression.

Why can averaging several people's answers fail to eliminate cognitive bias?

If individuals share the same systematic error, averaging their responses preserves that directional error rather than canceling it. Aggregation works better for independent random errors than for correlated biases.

Cognitive bias modification (CBM)

An approach that trains people to change maladaptive patterns of attention, interpretation, or judgment. Technology-assisted CBM has been investigated both for general debiasing and for conditions such as anxiety, depression, addiction, and obsessive-compulsive symptoms.

What evidence suggests that cognitive biases can be modified?

Training videos, debiasing games, attention exercises, incentives, and accountability instructions have reduced susceptibility to several biases in studies. Some effects persist beyond the immediate training period, although effectiveness varies.

What individual differences are associated with susceptibility to cognitive bias?

People differ in cognitive ability, reflective thinking, age, flexibility, habits, and stable tendencies toward biases such as overconfidence or temporal discounting. Susceptibility is not fixed and can change with training.

Cognitive Reflection Test (CRT)

A measure designed to assess whether a person can resist an appealing but incorrect intuitive response and engage in reflective reasoning. Higher CRT performance is generally associated with stronger rational-thinking skills, though the relationship is not perfect.

How does age relate to cognitive-bias susceptibility?

Older adults may show greater susceptibility and less cognitive flexibility in some tasks. However, repeated practice and training can reduce bias in both older and younger adults.

Prospect theory

A theory that people evaluate potential gains and losses relative to a reference point rather than using objective final outcomes alone. It explains why loss aversion, framing effects, and risk preferences can influence decisions.

Mental accounting

The tendency to divide money or outcomes into separate mental categories and evaluate each category differently, rather than treating all resources as fully interchangeable. This can produce inconsistent financial judgments.