The Problem of Serial Order in Behavior

Karl S. Lashley · Cerebral Mechanisms in Behavior (Hixon Symposium) · 1951 · neuroscience · record lashley1951-serial-order
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Where this record's text came from. faceted 2026-08 by reading the locally held text (pdftext); every evidence string verified as an exact substring of that text before merging. A symposium address, not an empirical report: no new data are collected, so 'method' is recorded as review of existing evidence and argument. The paper is one of the earliest sources for the idea of preliminary partial activation ('priming') of expressive units, though the word is used descriptively rather than as a measured effect. The file includes the post-talk discussion by other symposium participants and the opening of the following chapter; quotes were taken only from Lashley's own text (including his closing reply, which is where the McCulloch relation appears). The OCR of this scanned volume is noisy, so several verbatim quotes contain scanning errors ('organizalion', 'in,olved', 'transmjssion', '}.[ax'); these are preserved exactly as they appear. 2026-08-19 and 2026-08-23 schema-0.3 passes: every quote verified as an exact substring of the staged text and anchored at merge time; concept terms verified present; every edge endpoint an existing node.
The quality of the text these quotes were cut from. ocr-letter-substitution (BOTH COPIES): the 1951 scan's OCR replaced individual letters with stray symbols - 'sug~ests' for 'suggests', 'phy~iologist', 'mi~takcs', and 'cxistl·ncc' for 'existence', where 'c' also stands in for 'e'. 34 damaged tokens of 16596 whitespace-delimited words in an internal file (0.20%), requiring two or more letters either side of the symbol; 67 on the looser one-letter form. the project counts 27 of 12,271 (0.22%) under a different tokeniser - the raw counts differ, the rates agree. an internal file carries the same fault at the same rate, so re-sourcing from it would not help. NOT a diacritic fault: no accent table or render-time map reaches this class, because the characters are wrong rather than misplaced. 25 live quotes cover 3.9% of the body and 2 carry a damaged token - against 1.31 expected if quoting were blind to the damage, so the quotes are AT CHANCE and were not steered around it.
Some words in these quotes contain the wrong character. The PDF this text was extracted from substituted 45 characters inside a word — a currency sign or a stray accent where a letter pair belongs, as in signi¢cantly for significantly, or a single ligature glyph, as in confidence. They are valid characters in the wrong place, so they survive every encoding check. The quotes keep them for the same reason as above, and a search of this page will not find the affected words.
This record’s own method is review, and the tags below follow from that. A review’s findings, quantities and statistics are things stated IN this paper, and some of them report results obtained elsewhere. No tag on this page names a different author. Measured across every review in this corpus, 81% of a review’s tags carry no citation at all — most of them are the review speaking. The corpus does not adjudicate the rest: read an unmarked tag as a claim this paper makes, not necessarily one it made first.
How to read this page. The article itself is not reproduced here — this paper is not cleared for redistribution, so what follows is the tag layer alone. The evidence sentences are withheld with the article. The table at the foot lists every tag the record carries; each row names the facet it belongs to, and the whose words column says whether the tag records the paper's own wording or the tagger's sentence about the paper. Every tag links to each other paper in the corpus carrying it. The machine-readable edition of the same thing is the TEI file beside this one, where the tags live in standOff, and the article is at its publisher via the link below. When we have changed our mind. Some entries in the table begin with a word in capitals and the reason for it. EVIDENCE CORRECTED — the finding still stands, but we had quoted the wrong sentence from the paper, and the quotation has been replaced with the right one. RETRACTED — the entry itself was wrong; it stays on the page, marked, with the reason, rather than being deleted. WITHDRAWN AND REPLACED — the entry was wrong, and a corrected version of it appears in the entries below. Each mark carries its own reason, in brackets, because the reasons differ from one entry to the next. An entry we have WITHDRAWN is removed from this page and kept in the record, with its reason. A line reading Audit and a date is a later re-reading of the entry against its whole sentence: DOUBTFUL means it was kept, and the reason says what is loose about it. Quotation marks inside the tagger's sentence. Where a tag is the tagger's own sentence, a phrase in quotation marks inside it is borrowed from the paper — the tagger's wording around it is not. The paper's own sentence is the evidence quote for that row; on this page it is withheld with the article, and the article is at its publisher. Nothing inside quotation marks anywhere on this page is ours: if it is quoted, it is the paper's. Whose words a concept carries. A concept entry records a term the paper itself uses, so the term, the sense given for it, and its evidence are the paper's own words, quoted where the paper fixes them. This is the opposite of a sense entry in the tag table, which is the tagger's sentence about how the paper uses a term. Where a concept entry could not be grounded in the paper's words, the entry says so on its own row.
Other fields define these differently the same word, defined another way in another discipline
behavior 4 fields · language 3 fields · priming 2 fields

Tags on this paper

Every tag the record carries, each linking to every other paper in the corpus that carries it. A tag appears here whether or not its words occur in the article — the spans below are only the ones a sentence in this paper licenses. Of the 10 concept tags on this paper, 4 are grounded in a quoted sentence. 3 carry the tagger's gloss of what the term means in this paper, which is not something the article can license.
priming pre-activation serial order associative chaining association secondariness modulation schemata of action associative chain syntax serial behavior is produced by a hierarchical central plan (nested orderings of movements, words, sentences), not by associative chains in which each act merely triggers the next behavior language movements sequence temporal associative hierarchies associative chain theory schema of order mean average of review

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relation to other workclaim_relationshow this paper stands to another: agrees, contradicts, extends, qualifies
claim typeclaim_typethe shape of the claim: existence, mechanism, method, critique, prediction, null
concept edgeconcept_edgesan asserted relation between two concepts, with the sentence asserting it
conceptconceptsan idea the paper works with, quoted where the paper uses it
content tagcontent_tagsa finding, definition, quantity, statistic or variable named in the paper
limitationlimitationswhat the paper says its evidence cannot support
mechanismmechanismshow the reported effect is said to come about
methodmethodhow the paper produced its evidence
phenomenonphenomenonthe effect or regularity under study
sensesensesa distinct use of a term, quoted where the paper fixes it
transfertransfersa method or concept carried in from another field

The paper

The full text is not reproduced here. This article is not cleared for redistribution, so the page carries the tag layer only. Its evidence sentences are withheld; the grounding status remains with each tag, and the article itself is at https://scholar.google.com/scholar?q=The%20Problem%20of%20Serial%20Order%20in%20Behavior. The reading view exists for the papers whose licence permits it.

Every tag on this page

claim_relations 3 · claim_type 1 · concept_edges 1 · concepts 4 · content_tags 5 · limitations 6 · mechanisms 1 · method 1 · phenomenon 1 · senses 3 · transfers 1

Relations on this page carry a quotation for the claim. Where a relation was separately evidenced — and so tested against the vocabulary for its type — the row says so; none of 1 relation here carry that mark. The rest are the tagger’s reading of the sentence quoted beside them.

This record holds no controls. A layer is empty when the tagger recorded nothing in it — which is not the same as the paper having nothing to record.

facettagfieldconf.whose words
claim_typecritique
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
claim_typethe paper's words
phenomenonserial order in behavior
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phenomenonthe paper's words
methodreview
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: review
methodthe paper's words
mechanismsmechanisms
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
mechanisms[0]the tagger's words
limitationsthe paper formulates the problem but offers no worked-out physiological solution
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
what this limits: the paper as a source of mechanism: A CLEARER FORMULATION OF THE PHYSIOLOGICAL PROBLEMS WHICH THEY RAISE SHOULD BE OF VALUE, EVEN THOUGH A SOLUTION OF THE PROBLEMS IS NOT YET IN SIGHT
limitations[0]the tagger's words
limitationsThe author states he has no answer to the central question of how particular acts are selected during scanning.
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
what this limits: the central question the paper poses: THE REAL PROBLEM ... IS THE NATURE OF THE SELECTIVE MECHANISM BY WHICH THE PARTICULAR ACTS ARE PICKED OUT IN THIS SCANNING PROCESS, AND TO THIS PROBLEM I HAVE NO ANSWER
limitations[1]the tagger's words
limitationsNo hypothesis about the selective mechanism of grammatical form proved consistent with any large set of sentence structures.
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
what this limits: any account of grammatical form: I HAVE TRIED A NUMBER OF ASSUMPTIONS CONCERNING THE SELECTIVE MECHANISM OF GRAMMATICAL FORM ... BUT I HAVE NEVER BEEN ABLE TO MAKE AN HYPOTHESIS WHICH [held across sentences]
limitations[2]the tagger's words
limitationsNo explicit explanation of temporal structure is yet available.
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
what this limits: the explanatory status of the whole treatment: WE ARE STILL VERY FAR FROM BEING ABLE TO FORM AN EXPLICIT EXPLANATION OF TEMPORAL STRUCTURE
limitations[3]the tagger's words
limitationsTHE STAGED SOURCE IS A DAMAGED 1951 SCAN, AND UNTIL NOW THE RECORD DID NOT SAY SO. The OCR fails at the LETTER level, not merely at diacritics: `The! CXISTL·NCC o( K. S. LA~HLEY` is `existence` with `c` substituted for `e` twice and a stray interpunct, inside a sentence that also carries `11cr\'ous systl•m` for `nervous system`. 67 tokens of 16,563 whitespace-delimited words carry a stray symbol between two letters (the tagger's predicate, one or more letters either side); 34 on the stricter two-letter form. [CORRECTED 2026-08-23: this sentence continued `a second count gives 99 of 12,271 on a stricter pattern and a different tokenisation`, kept here, with the counter's name dropped, because it was published. Wrong twice over - that audit WITHDREW the 99 as a LOOSE pattern counting one-letter fragments, so it was not the stricter one, and I repeated its number without running its predicate. Its corrected figure is 27 of 12,271, 0.22%, against my 34 of 16,523 alphabetic tokens, 0.21%.] Both describe the same paper. No accent table or render-time map reaches this class - the characters are wrong, not misplaced
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
limitations[4]0.85the tagger's words
limitationsAND THE 22 QUOTES ON THIS RECORD ALL LAND IN CLEAN STRETCHES, WHICH IS NOT LUCK: Quotation withheld shows the damage sitting in the middle of one of the paper's most quotable passages. 25 live quotes, 0 ungrounded, against 34 damage sites - and THAT IS WHAT CHANCE PREDICTS, NOT EVIDENCE OF CARE. [RETRACTED 2026-08-23. The superseded claim, kept verbatim: 22 live quotes, 0 ungrounded, against 67 damage sites - somebody read the text and cut around them. It is wrong three ways. The quotes cover 3.9% of the body, so blind quoting would hit 1.31 damage sites; 2 were hit. The observed rate is at or above chance. The count was 22 and is 25. And the two quotes that DO carry damage are the two cut for this very note, to exhibit it - so the record's evidence for the quotes avoid the damage is itself a quote that does not. The audit withdrew its general claim at 16:41: I observed an absence, attributed it to care, and never asked what absence would have looked like if nobody had tried. I had merged it as fact twenty minutes earlier.] The audit's finding, 2026-08-23 16:18: A TAGGER ROUTING AROUND DAMAGE LEAVES NO RECORD OF HAVING DONE SO. The record looks the same as one from a clean scan ... The care is invisible precisely because it worked. It is on the record now
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
limitations[5]0.95the tagger's words
transfersusing the hierarchical structure of language (syntax and grammar) as evidence and model for how the brain organizes serial behavior, against associative-chain theories
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
transfers[0]the tagger's words
conceptsserial order
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: serial order
concepts[2]the paper's words
conceptsschemata of action
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
concepts[7]0.95the paper's words
conceptsassociative chain
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
concepts[8]0.95the paper's words
conceptssyntax
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: syntax
concepts[9]0.95the paper's words
sensesTHE ARGUMENT IN ONE SENTENCE, AND IT TURNS ON A PROPERTY OF THE ELEMENTS: `Quotation withheld` If an element carries no information about what follows it, then no amount of association between elements can produce an order. The refutation is not empirical, it is about what associations are able to encode - which is why it has survived seventy-five years of contrary data
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[0]0.95the tagger's words
sensesAND THE STRONGEST FORM OF IT IS THE SYNTAX CLAIM: `Quotation withheld` Not in the words - so it is not associative. Not in the idea - so it is not simply read off the meaning either. Both of the obvious places to put it are refused in one sentence, which leaves ordering as a separate mechanism and is the move that made this paper foundational for everything that came after it
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[1]0.95the tagger's words
sensesWHAT THIS RECORD DOES AND DOES NOT SAY ABOUT THE REST OF THE CORPUS. Lashley's target is the associative chain - `Watson (26) sought to identify thought with inaudible movements of the vocal organs, linked together in associative chains` - and this corpus is largely built on measuring association between elements: meyer1971's free-association norms, collins1975's spreading activation, hutchison2003's association strength. They are not the same claim. Lashley is about the ORDER of action and speech; spreading activation is about retrieval, and retrieval has no ordering problem to solve. The honest statement is narrower and still worth holding: the corpus contains, from 1951, a sustained argument that association cannot by itself produce order - and from 1971 onward, a literature that measures association and rarely asks what orders anything
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[2]0.85the tagger's words
claim_relationscontradicts → the associative-chain / chain-reflex theory of serial behavior
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
claim_relations[0]the tagger's words
claim_relationscontradicts → the peripheral (motor) chain theories of language of Watson and Washburn, and the attempts by Thorsen and Max to confirm them
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
claim_relations[1]the tagger's words
claim_relationsbuilds-on → Dr. McCulloch's account of the individual neuron's transmission of excitation as the basic principle of nervous organization
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
claim_relations[2]the tagger's words
concept_edgesschemata of action —causes→ serial order
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
strength of the relation: 0.85 · note: THE SENTENCE STATES THIS AS THE PROBLEM, NOT AS A DEMONSTRATED MECHANISM, AND THE WEIGHT HAS TO CARRY THAT. 'the essential PROBLEM…' - Lashley is naming what has to exist for serial order to be possible, and the rest of the paper is an argument that nothing simpler will do. He does not show a schema; he shows that the alternatives fail. 0.85 rather than 0.95 for exactly that reason: this is an inference to the best available explanation in 1951, presented as one, and an edge at 0.95 would read as a finding. Both endpoints are named as words and 'determine' is unambiguous about direction. Audit 2026-09-28: DOUBTFUL - read against its full span and kept, but the span says generalized schemata of action determine the sequence of acts, which it calls the problem of serial order; causes is loose.
concept_edges[0]0.95the tagger's words
content_tagsSyntax is not inherent in the words employed or in the idea expressed; it is a generalized pattern imposed upon them.
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[0]the tagger's words
content_tagsTemporal integration is not found exclusively in language: it appears in the leg coordination of insects, the song of birds, the trotting and pacing of a gaited horse, and the rat running the maze.
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
about this quote: QUOTE RECOVERED FROM THE PAPER'S OWN CHARACTERS. The recorded quote was LETTERS-ONLY IDENTICAL to this stretch of the staged text but not an exact substring of it - spaces, hyphens, ligature glyphs or mathematical operators differed, so it could never anchor. This is the file's own text between the same two letters: not produced by a rule about the damage, copied out of the file. Round-trip checked (the recovered span is letters-only equal to the original) and length-checked. The text as originally recorded is kept in evidence as extracted.
content_tags.findings[1]the tagger's words
content_tagsassociative chain theory
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.definitions[0]the tagger's words
content_tagsschema of order
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
about this quote: QUOTE RECOVERED FROM THE PAPER'S OWN CHARACTERS. The recorded quote was LETTERS-ONLY IDENTICAL to this stretch of the staged text but not an exact substring of it - spaces, hyphens, ligature glyphs or mathematical operators differed, so it could never anchor. This is the file's own text between the same two letters: not produced by a rule about the damage, copied out of the file. Round-trip checked (the recovered span is letters-only equal to the original) and length-checked. The text as originally recorded is kept in evidence as extracted.
content_tags.definitions[1]the tagger's words
content_tagsmean
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: mean
content_tags.statistics[0]the tagger's words

Interpretive choices

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