Crate bodh 

Bodh — Psychology Engine

बोध (Sanskrit: awareness, understanding)

A Rust library for computational psychology: cognition, perception, learning, decision-making, psychometrics, and psychophysics.

Modules

• psychophysics — Weber-Fechner, Stevens’ power law, Fitts’ law, Hick’s law
• cognition — Working memory, dual process theory, cognitive load
• learning — Ebbinghaus forgetting curve, spaced repetition, conditioning
• decision — Prospect theory, expected utility, bounded rationality
• perception — Signal detection theory (d’), Gestalt principles
• psychometrics — Cronbach’s alpha, reliability, Big Five measurement
• development — Piaget stages, Erikson stages
• emotion — Russell circumplex, Ekman basic emotions, appraisal, regulation
• memory — ACT-R base-level activation, spreading activation, retrieval
• bayesian — Bayes’ theorem, belief updating, base rate neglect
• social — Asch conformity, social impact, attribution, comparison
• motivation — Self-determination theory, expectancy-value, flow state
• attention — Posner cueing, feature integration, attentional blink
• irt — Item Response Theory (1PL/2PL/3PL), information functions
• stress — Transactional stress model, coping, stress-performance
• bridge — Cross-crate bridges for pramana statistics integration

Example

use bodh::psychophysics;

// Fitts' law: index of difficulty for a mouse target
let id = psychophysics::fitts_law(256.0, 4.0).unwrap();
assert!((id - 7.0).abs() < 1e-10); // 7 bits

// Ebbinghaus forgetting curve
let retention = bodh::learning::ebbinghaus_forgetting(0.0, 1.0).unwrap();
assert!((retention - 1.0).abs() < 1e-10); // perfect at t=0

Re-exports

pub use error::BodhError;

Modules

attention

Attention — Posner cueing, feature integration, attentional blink, visual search.

bayesian

Bayesian inference — belief updating, base rate neglect, conservatism.

bridge

Cross-crate bridges — convert primitive values from pramana statistics outputs into bodh psychology parameters and vice versa.

cognition

Cognition — working memory, dual process theory, cognitive load.

decision

Decision-making — prospect theory, expected utility, bounded rationality.

development

Developmental psychology — stage theories, cognitive development.

emotion

Emotion — affect models, appraisal, emotion-cognition interaction.

error

Error types for the bodh psychology engine.

irt

Item Response Theory — 1PL, 2PL, 3PL models for psychometric measurement.

learning

Learning — memory, forgetting curves, spaced repetition, conditioning.

memory

Memory retrieval — ACT-R declarative memory, activation, retrieval.

motivation

Motivation — self-determination theory, expectancy-value, flow state.

perception

Perception — signal detection theory, Gestalt principles.

psychometrics

Psychometrics — measurement of psychological constructs.

psychophysics

Psychophysics — relationships between physical stimuli and perception.

social

Social cognition — conformity, social influence, attribution, comparison.

stress

Stress — transactional stress model, coping, stress-performance.