BF_Skinner_About_Behaviourism

# BF Skinner — _About Behaviourism_ (1974) **Type:** Book Notes · **Status:** In Progress **Tags:** `#psychology` `#behaviourism` `#Skinner` `#operant-conditioning` `#philosophy-of-mind` `#radical-behaviourism` `#verbal-behaviour` --- ## Overview _About Behaviourism_ is Skinner's defence and clarification of radical behaviourism — not a summary of experiments, but a philosophical and scientific argument for why **behaviour, not mind, is the proper object of psychology**. > "The task of a scientific analysis is to explain how the behaviour of a person as a physical system is related to the conditions under which the human species evolved and the conditions under which the individual lives." — B.F. Skinner Skinner acknowledges from the outset that "not all will agree" — he is writing against the grain of folk psychology, psychoanalysis, and the cognitive turn that was already underway in the 1970s. --- ## Core Premise: Behaviour is Lawful Behaviour is not random — it follows **lawful patterns** that can be studied scientifically: - **If this → then that** — antecedent conditions shape what organisms do - **It is because of that before it** — past reinforcement history explains present behaviour - Behaviour is a _function_ of the environment, not of internal mental states > "Behaviour is shaped and maintained by its consequences." The goal of the science is **prediction and control of behaviour** through the identification of environmental contingencies. ### Key Questions Skinner Poses |Question|Skinner's Framing| |---|---| |What are incentives?|Observable consequences that increase behaviour frequency| |How do you shape behaviour?|Through differential reinforcement of successive approximations| |Are feelings causes?|No — they are _collateral products_ of contingency history| |Should we ignore inner states?|Not ignore — reframe them as _behaviours_, not causes| --- ## What Science Can Study Skinner insists science must restrict itself to the **observable and measurable**: |Observable (Acceptable)|Unobservable (Rejected as _causes_)| |---|---| |Behaviour|Intentions / will| |Environmental contingencies|Consciousness (as a causal entity)| |Genetic history|Mental representations| |Reinforcement history|"Autonomous man"| > **"Not of mentalism"** — explanations that invoke hidden mental entities are, for Skinner, unscientific. They name the problem rather than explain it. The difference between **methodological** and **radical** behaviourism is crucial here: |Type|Scope|Associated With| |---|---|---| |Methodological behaviourism|Study only _public_ behaviour; ignore private events|Watson (1913)| |Radical behaviourism|Include _private events_ — but treat them as behaviour, not causes|Skinner (1938–1974)| > "Radical behaviourism does not insist upon truth by agreement and can therefore consider events taking place in the private world within the skin." --- ## The Three-Term Contingency (ABC Model) Skinner's core analytical framework. Every instance of operant behaviour can be understood in terms of three terms: ```mermaid flowchart LR A["🟡 Antecedent (Discriminative Stimulus) Sd"] B["🟢 Behaviour (Response / Operant) R"] C["🔴 Consequence (Reinforcer or Punisher) Sr"] A -->|"sets the occasion for"| B B -->|"produces"| C C -->|"alters future probability of R"| B ``` 1. **Antecedent (Sd)** — the prior condition or discriminative stimulus that signals reinforcement is available 2. **Behaviour (R)** — the observable operant response 3. **Consequence (Sr)** — the outcome that alters the probability of the behaviour recurring > "A discriminative stimulus sets the _occasion_ for reinforcement of the operant — it does not _cause_ the response in a mechanistic sense." ### Key Term Translations These are Skinner's technical terms with their standard equivalents in French and German — useful for reading secondary literature: |English|French|German| |---|---|---| |Operant conditioning|Conditionnement opérant|Operante Konditionierung| |Reinforcement|Renforcement|Verstärkung| |Discriminative stimulus (Sd)|Stimulus discriminatif|Diskriminativer Reiz| |Contingency|Contingence|Kontingenz| |Extinction|Extinction|Löschung| |Shaping|Façonnage / Modelage|Verhaltensformung| |Schedule of reinforcement|Programme de renforcement|Verstärkungsplan| |Verbal behaviour|Comportement verbal|Verbales Verhalten| --- ## Types of Consequences ```mermaid flowchart TD C["Consequence"] --> R["Reinforcement increases behaviour"] C --> P["Punishment decreases behaviour"] R --> R1["➕ Positive Reinforcement Add something good e.g. food, praise"] R --> R2["➖ Negative Reinforcement Remove something aversive e.g. stop loud noise"] P --> P1["➕ Positive Punishment Add something aversive e.g. electric shock, criticism"] P --> P2["➖ Negative Punishment Remove something good e.g. time-out, loss of privilege"] ``` > "A person who has been punished is not thereby simply less inclined to behave in a given way; at best, he learns how to avoid punishment." **Extinction** — the absence of a previously delivered reinforcer — weakens behaviour over time, but often produces an initial _extinction burst_ before the behaviour fades. --- ## Schedules of Reinforcement Different patterns of delivering reinforcement produce distinctly different behavioural profiles: |Schedule|Description|Behavioural Effect| |---|---|---| |Fixed Ratio (FR)|Reinforce after _n_ responses|High, steady rate; post-reinforcement pause| |Variable Ratio (VR)|Reinforce after _variable_ number of responses|Highest & most resistant to extinction (e.g. gambling)| |Fixed Interval (FI)|Reinforce after _n_ seconds, if response emitted|Scalloped pattern — slow then fast near interval end| |Variable Interval (VI)|Reinforce after _variable_ time periods|Moderate, steady rate; very resistant to extinction| --- ## Reflexes and "Inner Behaviours" Skinner distinguishes between types of responses: ```mermaid flowchart TD B["Behaviour"] --> R["Respondent (Classical / Pavlovian)"] B --> O["Operant (Skinnerian)"] R --> UR["Unconditioned Reflex Innate stimulus-response"] R --> CR["Conditioned Reflex Learned via pairing e.g. Pavlov's dog"] O --> SP["Shaped by consequences through reinforcement history"] O --> RG["Rule-governed behaviour Controlled by verbal stimuli"] ``` ### On Instincts and Fixed Action Patterns Skinner engages with ethological concepts but reframes them: - **Instincts** are real _patterns_ of behaviour shaped by evolutionary selection — but they are not a "force" that _pushes_ organisms. They describe; they do not explain. - **Fixed Action Patterns** (from ethology) are innate, stereotyped sequences triggered by specific stimuli — Skinner accepts these as data, while insisting that evolution shaped them through _selection by consequences_ at the species level. - **Aggression and fear** — Skinner treats these not as instinctual drives but as behaviours shaped by contingency histories. The _feelings_ of aggression and fear are collateral products, not causes. > "The contingencies of survival responsible for man's genetic endowment would produce tendencies to act aggressively — not feelings of aggression." --- ## Selection by Consequences A key theoretical move: Skinner parallels Darwinian natural selection with operant conditioning. ```mermaid flowchart LR subgraph Species ["Species Level"] EV["Variation in traits"] --> NS["Natural Selection (survival & reproduction)"] NS --> GE["Genetic repertoire of species"] end subgraph Individual ["Individual Level"] VB["Variation in behaviour"] --> OC["Operant Conditioning (reinforcement & punishment)"] OC --> BR["Behavioural repertoire of individual"] end subgraph Cultural ["Cultural Level"] VP["Variation in practices"] --> CS["Cultural Selection (group survival)"] CS --> CT["Cultural transmission of practices"] end ``` > "Human behaviour is the joint product of (1) the contingencies of survival responsible for the natural selection of the species and (2) the contingencies of reinforcement responsible for the repertoire acquired by the individual." --- ## Verbal Behaviour and Self-Knowledge Skinner was deeply interested in how _language_ shapes the possibility of self-knowledge. His key insight: self-reports are themselves **verbal behaviours** shaped by social contingencies — they are not transparent windows onto inner states. ### The Problem of Private Stimuli The verbal community trains individuals to report on their internal states — but it faces a fundamental problem: **it cannot directly observe the stimuli it is trying to get people to label**. |Method of training self-reports|Example| |---|---| |Public accompaniments|Saying "that hurts" after seeing a cut| |Collateral behaviour|Inferring pain from flinching| |Generalisation from public cases|Applying "I'm angry" because public anger looks similar| This is why, Skinner argues, our self-knowledge is **limited and often inaccurate** — not because of repression or unconscious processes, but because of the inherent difficulties of the verbal community's training situation. ### Verbal Tense as Behavioural Report |Phrase|Skinner's Analysis| |---|---| |_"I was angry"_|Report on past internal state — retrospective tact, accuracy limited| |_"I am angry"_|Report on current private stimulus — shaped by public accompaniments| |_"I feel anxious"_|Tact of a private bodily condition; controlled by conditioning, not direct observation| > "Nothing is different until it's different." — Behaviour only changes when contingencies change; the appearance of spontaneous change is an illusion born of unnoticed shifts in the environment. ### Verbal Operants (from _Verbal Behaviour_, 1957) |Operant|Definition|Example| |---|---|---| |**Mand**|Verbal behaviour specifying its own reinforcer; under motivational control|"Water!" (when thirsty)| |**Tact**|Verbal behaviour under control of a non-verbal stimulus|"That's a red ball"| |**Echoic**|Verbal behaviour that reproduces a heard verbal stimulus|Repeating a word after a teacher| |**Intraverbal**|Verbal behaviour controlled by prior verbal behaviour|Answering "Paris" to "capital of France?"| |**Autoclitic**|Secondary verbal behaviour that modifies primary verbal behaviour|"I think..." / "It seems..."| --- ## Glossary of Behavioural Units |Term|Definition| |---|---| |**Operant**|A class of responses defined by their function/effect on the environment| |**Reinforcer**|Any consequence that increases the future probability of a behaviour| |**Punisher**|Any consequence that decreases the future probability of a behaviour| |**Discriminative Stimulus (Sd)**|A stimulus that signals the availability of reinforcement for a specific behaviour| |**Shaping**|Reinforcing successive approximations toward a target behaviour| |**Chaining**|Linking discrete operants into complex sequences| |**Extinction**|Withholding a previously delivered reinforcer; weakens the behaviour over time| |**Generalisation**|A behaviour trained in one context occurring in a similar context| |**Discrimination**|Responding differently in the presence vs. absence of a discriminative stimulus| |**Contingency**|The _if-then_ relationship between behaviour and consequence| |**Schedule of reinforcement**|The pattern or rule governing when reinforcement is delivered| --- ## Radical Behaviourism vs. Mentalism ```mermaid flowchart LR M["Mentalism (folk psychology, cognitivism)"] RB["Radical Behaviourism (Skinner)"] M --> M1["Inner states cause behaviour (beliefs, desires, intentions)"] M --> M2["Self-knowledge is direct introspection"] M --> M3["Language expresses pre-formed inner ideas"] RB --> RB1["Inner states are collateral products, not causes"] RB --> RB2["Self-knowledge is learned verbal behaviour with limited accuracy"] RB --> RB3["Language is operant behaviour shaped by social contingencies"] ``` > "A self is a repertoire of behaviour appropriate to a given set of contingencies." — Skinner > "Autonomous man serves to explain only the things we are not yet able to explain in other ways. His existence depends upon our ignorance." — Skinner, _Beyond Freedom and Dignity_ (1971) --- ## Critical Counterpoint — Chomsky (1959) Noam Chomsky's review of _Verbal Behaviour_ is the most famous attack on Skinner's programme. Key objections: - The concepts of "stimulus," "response," and "reinforcement" lose all precision when extended to human language — they become metaphors, not scientific terms - Language acquisition in children is too fast and too creative to be explained by reinforcement alone (_poverty of the stimulus_ argument) - Humans produce and understand **novel sentences** they have never heard before — this cannot be a conditioned response Skinner never formally replied. Kenneth MacCorquodale (1970) responded on his behalf, arguing Chomsky fundamentally misread the operant framework. The debate remains live. --- ## Further Reading ### Primary Sources |Author|Work|Notes| |---|---|---| |Skinner|_The Behaviour of Organisms_ (1938)|Foundational experimental work; introduces operant conditioning| |Skinner|_Science and Human Behaviour_ (1953)|Accessible application of operant principles to everyday life| |Skinner|_Verbal Behaviour_ (1957)|Language as operant behaviour; introduces mand, tact, etc.| |Skinner|**_About Behaviourism_ (1974)**|← _current text_ — philosophical defence of radical behaviourism| |Skinner|_Beyond Freedom and Dignity_ (1971)|Controversial cultural application; introduces "autonomous man" critique| ### Secondary / Contextual |Author|Work|Notes| |---|---|---| |Watson|"Psychology as the Behaviourist Views It" (1913)|Founding manifesto; methodological (not radical) behaviourism| |Pavlov|_Conditioned Reflexes_ (1927)|Classical conditioning background; respondent behaviour| |Chomsky|"Review of Skinner's Verbal Behaviour" (1959)|Essential critique; widely cited, disputed by MacCorquodale| |MacCorquodale|"On Chomsky's Review of Skinner's Verbal Behaviour" (1970)|Defence of Skinner; argues Chomsky misread the framework| |Baum|_Understanding Behaviourism_ (2005)|Excellent modern introduction and defence of radical behaviourism| |Cooper, Heron & Heward|_Applied Behaviour Analysis_ (3rd ed., 2020)|How these principles are applied in clinical and educational practice| ### Philosophy of Mind / Critique |Author|Work|Notes| |---|---|---| |Ryle|_The Concept of Mind_ (1949)|"Ghost in the machine" — philosophical critique of Cartesian dualism| |Nagel|"What Is It Like to Be a Bat?" (1974)|Challenges behaviourist accounts of inner experience| |Dennett|_Consciousness Explained_ (1991)|Builds on behaviourist intuitions but goes further into cognitive territory| --- ##### _Notes last updated: 2026-04-18 10:17 pm_