Psicothema was founded in Asturias (northern Spain) in 1989, and is published jointly by the Psychology Faculty of the University of Oviedo and the Psychological Association of the Principality of Asturias (Colegio Oficial de Psicólogos del Principado de Asturias).
We currently publish four issues per year, which accounts for some 100 articles annually. We admit work from both the basic and applied research fields, and from all areas of Psychology, all manuscripts being anonymously reviewed prior to publication.

  • Director: José Muñiz
  • Frequency:
         February | May | August | November
  • ISSN: 0214-9915
  • Digital Edition:: 1886-144X
  • Address: Ildelfonso Sánchez del Río, 4, 1º B
    33001 Oviedo (Spain)
  • Phone: 985 285 778
  • Fax: 985 281 374

Psicothema, 2007. Vol. Vol. 19 (nº 4). 559-564

La posición de las letras externas en el reconocimiento visual de palabras

Manuel Perea y Stephen J. Lupker*

Universidad de Valencia y * Universidad de Western Ontario, London (Canadá)

Experimentos recientes han mostrado que los efectos de transposición de letras son muy robustos, incluso cuando se trasponen letras (internas) no adyacentes (caniso activa CASINO). En este trabajo se presenta, en primer lugar, un estudio computacional que examina hasta qué punto la información de la posición de las letras es necesaria para acceder a la entrada léxica adecuada. En segundo lugar, se presenta un experimento de «priming» enmascarado con la tarea de decisión léxica para determinar si los efectos de transposición de letras aparecen cuando se transpone la letra inicial. Hubo dos tipos de estímulos-señal: 1) pseudopalabras creadas al transponer las letras primera y tercera (démula-MÉDULA), y 2) pseudopalabras creadas al sustituir las letras primera y tercera (bérula-MÉDULA). Los resultados mostraron que el efecto de transposición de letras no ocurre al transponer la primera letra. Se examinan las implicaciones de estos resultados para los modelos de reconocimiento de palabras.

The role of external letter positions in visual word recognition. A key issue for any computational model of visual word recognition is the choice of an input coding schema, which is responsible for assigning letter positions. Such a schema must reflect the fact that, according to recent research, nonwords created by transposing letters (e.g., caniso for CASINO), typically, appear to be more similar to the word than nonwords created by replacing letters (e.g., caviro). In the present research, we initially carried out a computational analysis examining the degree to which the position of the transposition influences transposed-letter similarity effects. We next conducted a masked priming experiment with the lexical decision task to determine whether a transposed-letter priming advantage occurs when the first letter position is involved. Primes were created by either transposing the first and third letters (démula-MÉDULA) or replacing the first and third letters (bérula-MÉDULA). Results showed that there was no transposed-letter priming advantage in this situation. We discuss the implications of these results for models of visual word recognition.


Impact factor 2021:   JCR (WOS): 4.104 (Q1)   |   SJR (Scopus) : 1.308 (Q1)    |  CiteScore 2020: 5,3

Psicothema is included in the following documentation Centers:
Social Sciences Citation Index JCR WOS. Current Contents - Social and Behavioural Sciences. MEDLINE/Index Medicus. Index Copernicus. Psychological Abstracts. PsycLIT. PsycINFO. Family Studies Database. Bases de datos ISOC–Psicología. REDINED. Psicodoc. Scopus. Dialnet. IN-RECS, Latindex, Redalyc, Google Scholar, European Reference Index For The Humanities, Directory of open access journals, Pubpsych, IBECS (Spanish bibliographic index in health sciences), REDIB y EBSCO Essentials.


Ildelfonso Sánchez del Río, 4, 1º B
33001 Oviedo · Spain

   985 285 778    Contact

Legal Warning | Cookies | Privacy policy

SCImago Journal & Country Rank