Self-Efficacy: Toward a Unifying Theory of Behavioral Change
Psychological Review, 1977 · paper · Psychology
Proposes that different psychological treatments work by changing a person's expectations of personal efficacy, which determine coping effort and persistence. These expectations arise from performance accomplishments, vicarious experience, verbal persuasion and physiological states; reported findings support the link to behavioral change.
Checked: PDF from susana.org, fetched 5 Oct 2026. Page numbers are those of that PDF.
1 finding
Reference or label Reference list, p. 213 (PDF p. 23): "Blanchard, E. B. The generalization of vicarious extinction effects. Behaviour Research and Therapy, 1970, 7, 323-330. (a)" pairs year 1970 with volume 7, while the same list dates volume 7 of that journal 1969 (Barlow et al., "1969, 7, 191-196"; Ritter, "1969, 7, 157-164") and volume 8 1970 (McGlynn & Mapp, "1970, 8, 197-201"; Sushinsky & Bootzin, "1970, 8, 29-33").
- p. 23 References, Blanchard (a)
Therapy, 1970, 7, 323-330. (a)
- p. 23 References, Barlow et al.
search and Therapy, 1969, 7, 191-196.
- p. 24 References, Ritter
Research and Therapy, 1969, 7, 157-164.
- p. 24 References, McGlynn & Mapp
Therapy, 1970, 8, 197-201.
Only the authors can say what is right here.
Judge's note: Read the Blanchard entry on the crop and the other Behaviour Research and Therapy entries on the page images of PDF pages 23 and 24 and in the text: 1967=5, 1969=7 (twice), 1970=8 (twice), 1971=9, 1973=11, 1975=13, 1976=14. The Blanchard (a) entry is the only one that breaks the one-volume-per-year pattern, so either its year or its volume is wrong; the files cannot say which. The text cites it as "Blanchard, 1970a", so if the year is wrong the a/b lettering is affected too. The merged cluster C024 reports that Crossref lists this work under volume 8, which is outside evidence and not checkable here.
Second check: another model agreed
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21 minor (typos and the like; most checked by the judge only)
Wording The fourth source of efficacy information is named "physiological states" in the abstract and in the sentence introducing Figure 2 ("verbal persuasion, and physiological states. Figure 2"), but "EMOTIONAL AROUSAL" in Figure 2 and "Emotional arousal." in the subsection heading.
- p. 1 Abstract
vicarious experience, verbal persuasion, and physiological states
- p. 5 Sources of Efficacy Expectations, first paragraph (introducing Figure 2)
persuasion, and physiological states. Figure 2
- p. 5 Figure 2, fourth source box
EMOTIONAL AROUSAL
- p. 8 Run-in heading of the fourth subsection
Emotional arousal.
Judge's note: Checked on the crops of pages 1, 5 and 8. The other three source names match between text, figure and headings. The subsection treats the terms as near-synonyms ("state of physiological arousal"), so this is a labelling inconsistency only and either term could be intended.
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Wording The first dimension of efficacy expectations is defined as "magnitude" on page 4 ("magnitude, generality, and strength of ef-ficacy expectations") but is called "level" elsewhere (page 15: "The level, strength, and generality of the subjects' efficacy expectations"; abstract: "level and strength of self-efficacy"), and the article never equates the two terms.
- p. 4 Section 'Dimensions of Efficacy Expectations'
magnitude, generality, and strength of ef-
- p. 15 Method description of the microanalysis
The level, strength, and generality of the
Judge's note: Checked on the crops of pages 4 and 15 and the abstract. A text search finds "magnitude" used for this dimension only where it is defined on page 4, and "level" in the empirical sections and figure captions. The definition ("when tasks are ordered in level of difficulty") makes the meaning recoverable, so this is a terminology inconsistency only.
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Wording Page 17 states "In all conditions, the stronger the efficacy expectations, the higher was the likelihood that a particular task would be successfully completed", but in the left panel of Figure 4 the modeling curve is highest at the 70-80 bin and slightly lower at 90-100.
- p. 17 Body text, left column, paragraph describing Figure 4
In all conditions, the stronger the efficacy expectations, the higher was the likelihood that a particular task would be successfully completed.
- p. 17 Figure 4, left panel, MODELING (dashed) curve, bins 70-80 vs 90-100
STRENGTH OF EFFICACY EXPECTATIONS
Judge's note: On the full page image the dashed modeling curve peaks near 1.0 at 70-80 and falls a little at 90-100, where the three curves converge at about 0.95. The dip is small, near ceiling, and read from a low-resolution plot, so its size is approximate. The sentence reads naturally as a statement of the overall trend, which does hold in every condition. I have not recorded the reviewer's plot readings as arithmetic because they are estimates.
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Typo Page 1 prints "symbolically based experiences as the prin-ciple vehicle of change"; the adjective should be "principal".
- p. 1 Introduction, first paragraph, left column
symbolically based experiences as the prin-ciple vehicle of change
- p. 1 Introduction, first paragraph
symbolically based experiences as the prin-
- p. 1 Introduction, first paragraph, left column
as the prin-ciple vehicle of change
- p. 1 Introduction, first paragraph
principle vehicle of change
Judge's note: The crop shows the word broken as "prin-" / "ciple", so the printed word is "principle". The article uses "principal" correctly elsewhere ("four principal sources", "principal assumption").
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Typo Page 3 prints "prin-cipal asssumption that psychological pro-cedures"; "asssumption" has three s's.
- p. 3 Section 'Efficacy Expectations as a Mechanism of Operation', first sentence
cipal asssumption that psychological pro-
Judge's note: The crop of page 3 (right column, under the heading "Efficacy Expectations as a Mechanism of Operation") shows "asssumption" with three s's in print.
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Typo Page 4 prints "(Davison & Wilson, 1973, Lick & Bootzin, 1975)" with a comma between the two citations; the article separates citations with semicolons elsewhere.
- p. 4 Dimensions of Efficacy Expectations, end of first paragraph
(Davison & Wilson, 1973, Lick & Bootzin,
- p. 4 Right column, end of 'Dimensions of Efficacy Expectations' first paragraph
(Davison & Wilson, 1973, Lick & Bootzin, 1975)
Judge's note: The crop shows a comma after "1973". Elsewhere the article uses semicolons, for example "(Lick & Bootzin, 1975; Moore, 1965; Paul, 1966)" on page 8.
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Typo The in-text citation on page 6 reads "(LoPicollo, 1970;" while the reference list on page 24 reads "LoPiccolo, J. Effective components of systematic desensitization"; the surname is spelled two ways.
- p. 6 Performance accomplishments, left column bottom
(LoPicollo, 1970;
- p. 24 References
LoPiccolo, J. Effective components of systematic
- p. 24 Reference list
LoPiccolo, J. Effective components of systematic desensitization
Judge's note: Both spellings are visible on the crops. The year matches the Dissertation Abstracts International entry, so it is the same work. Which spelling is right cannot be settled from the files; the inconsistency is certain.
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Typo Page 6 prints "produce results decidely superior to imagined exposure"; "decidely" should be "decidedly".
- p. 6 Right column, paragraph on massive exposure
produce results decidely superior to imagined
- p. 6 agoraphobia paragraph
produce results decidely superior
- p. 13 Differing Perspectives, effectance theory paragraph
Athough the theory of effectance motivation
Judge's note: The crop of page 6 shows "decidely". The "Athough" misspelling that one reviewer added to this cluster is judged under C009.
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Typo Page 13 prints "Athough the theory of effectance motivation"; "Athough" should be "Although".
- p. 13 Differing Perspectives on Self-efficacy, left column
Athough the theory of effectance motivation
Judge's note: The crop of page 13 (left column) shows "Athough" with the l missing.
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Typo Page 14 prints "(Bolles, 1972b; Heneman, & Schwab, 1972; Irwin, 1971)" with a stray comma before the ampersand in a two-author citation.
- p. 14 Left column, paragraph beginning 'With the ascendency of cognitive views'
Heneman, & Schwab, 1972
Judge's note: The crop shows the comma after "Heneman". Other two-author citations in the article have none ("Davison & Wilson", "Lick & Bootzin", "Stern & Marks").
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Typo Page 14 prints "subjects understand what kind of behavior will be required and the circumstances in which they will be asked to perform them"; "them" has no plural antecedent that can be performed.
- p. 14 Left column, first paragraph
which they will be asked to perform them
- p. 14 Left column, first paragraph
which they will be asked to perform them.
Judge's note: Read on the crop. "Them" refers back to the singular "kind of behavior". The meaning is clear and a loose plural sense is arguable, so this is a minor grammatical point.
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Typo Page 18 prints "anxiety-reducing activities are at most facili-tory, not necessary, conditions"; "facilitory" is a nonstandard form of "facilitative" or "facilitatory".
- p. 18 Comparison of Self-efficacy and Dual-Process Theory, right column
anxiety-reducing activities are at most facili-tory, not necessary, conditions
Judge's note: The crop shows "facili-" / "tory" across the line break. The printed form drops a syllable from "facilitatory"; it could be a typesetting slip or a nonstandard variant, hence an observation.
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Typo Page 18 prints "some of the subjects in the modeling conditions had only brief ex-posure" (plural), although the same paragraph refers to the single "modeling condition" ("subjects in the modeling condition were yoked").
- p. 18 Left column, paragraph 'The theory also accounts for variations'
the modeling conditions had only brief ex-
Judge's note: Both forms are visible in the same paragraph on the crop. The experiment as described has one modeling condition and a separate participant modeling condition, and no second modeling condition is described. The meaning is not affected.
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Typo p. 210 (PDF p. 20), right column: "Self-efficacy was an accurate predictor of subsequent performance on 85% for all the tasks, and 83% for the subset of tasks" — the preposition sequence "on 85% for all the tasks" does not parse ("on 85% of all the tasks" or "in 85% of" is evidently meant).
- p. 20 Right column, microanalysis of desensitization results
on 85% for all the tasks, and 83% for the
Judge's note: Read the crop: the printed words are "on 85% for all the tasks, and 83% for the subset of tasks that subjects were unable to perform". The "for" is parallel with "83% for the subset", so the stray word may be "on" rather than "for"; either way one word is wrong. Wording slip only; the figures are not affected.
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Typo p. 211 (PDF p. 21), right column: "of treatment predicted, at a 84% level of accuracy" — indefinite article should be "an" before "84%".
- p. 21 Right column, first paragraph
at a 84% level of
- p. 21 Right column, end of the section before 'Concluding Remarks'
of treatment predicted, at a 84% level of
Judge's note: Crop shows "at a 84% level of accuracy" as printed. Cosmetic.
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Typo Reference list, p. 213 (PDF p. 23), left column: the entry "Borkovec, T. D. The role of expectancy and physiological feedback in fear research" is printed before "Bootzin, R. R., Herman, C. P., & Nicassio, P. The power of suggestion", out of alphabetical order.
- p. 23 References, left column bottom
Borkovec, T. D. The role of expectancy and physi-
- p. 23 References, left column bottom (next entry)
Bootzin, R. R., Herman, C. P., & Nicassio, P. The
Judge's note: Full page image: the last two entries of the left column are Borkovec then Bootzin, consecutive and in that order, following Bolles. The rest of the list is alphabetical, so this is not a column-interleaving artefact.
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Typo Reference list, p. 213 (PDF p. 23), Gaupp, Stern, & Galbraith: "avoidance behavior Behavior Therapy, 1972, 3, 7-20." — no full stop between the article title and the journal name.
- p. 23 References, Gaupp, Stern, & Galbraith
avoidance behavior Behavior Therapy, 1972, 3,
- p. 23 Reference list
snake avoidance behavior Behavior Therapy,
Judge's note: Crop shows "avoidance behavior Behavior Therapy," with no point after the title, whereas neighbouring entries (Estes, Flanders) end the title with a full stop.
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Typo Reference list, p. 213 (PDF p. 23), Heneman & Schwab: "employee performance Psychological Bulletin, 1972, 78, 1-9." — no full stop between the article title and the journal name.
- p. 23 References, Heneman & Schwab
employee performance Psychological Bulletin,
Judge's note: Crop shows "employee performance Psychological Bulletin," with no point after "performance"; the other entries on the page have one.
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Typo Reference list, p. 213 (PDF p. 23), Howlett & Nawas: "Fensterheim, & C M. Franks (Eds.), Advances in behavior therapy" — the editor's first initial lacks its full stop ("C M." for "C. M.").
- p. 23 References, Howlett & Nawas
Fensterheim, & C M. Franks (Eds.), Advances
- p. 23 Reference list
Fensterheim, & C M. Franks (Eds.)
Judge's note: Crop shows "& C M. Franks" with no point after C, while the other editors in the same entry are "R. D. Rubin, A. A. Lazarus, H. Fensterheim". The scan is of modest resolution, but no mark is visible where neighbouring points print clearly.
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Typo Reference list, p. 214 (PDF p. 24): "Sherman, A. R., Real-life exposure as a primary therapeutic factor" — a comma follows the author's initials where the list's style has only the full stop.
- p. 24 References, Sherman
Sherman, A. R., Real-life exposure as a primary
Judge's note: Crop shows "Sherman, A. R., Real-life exposure". Other single-author entries on the page ("Schachter, S. The interaction", "Ritter, B. The use", "Rotter, J. B. Generalized") have no comma.
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Typo Reference list, p. 214 (PDF p. 24): "Ross, L., Rodin, J., & Zimbardo, P. T. Toward an attribution therapy" — the third author's initials are printed "P. T."; the author of that paper is understood to be P. G. Zimbardo.
- p. 24 References, Ross, Rodin, & Zimbardo
Ross, L., Rodin, J., & Zimbardo, P. T. Toward an
Only the authors can say what is right here.
Judge's note: Rests on outside knowledge: that the third author of the 1969 Journal of Personality and Social Psychology paper is Philip G. Zimbardo, so the initials should be "P. G.". The crop clearly shows "Zimbardo, P. T."; nothing in the files gives the author's initials elsewhere (the text cites only "Ross, Rodin, & Zimbardo, 1969"), so the fact cannot be verified here.
Second check: none (judge only)