Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan

Ruff 2 and 7 Selective Attention Test

  • Ronald RuffEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_2145

Synonyms

2 and 7 test

Description

The Ruff 2 and 7 Selective Attention test is based on a model of selective attention (Logan 1988; Schneider and Shiffrin 1977) that posits that the ability to select targets is influenced by the distracter stimuli. For example, when the target numbers of 2 and 7 are embedded among similar distracters (other numbers), then Controlled Search is required. However, when the target numbers of 2 and 7 are interspersed among alphabetical letters, then the identification is enhanced due to Automatic Detection. This Automatic Detection is attributed to the categorical distinction between numbers and letters that is overlearned, and hence an automatic selection is evident even in semiliterate individuals. Although most of the research with this model was conducted with tachitoscopes, the 2 and 7 test examines Controlled Search and Automatic Detectionin a paper-and-pencil format. The measure spans 5 continuous minutes during which 2s and 7s need to be...

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References and Readings

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.San Francisco Clinical NeurosciencesUniversity of CaliforniaSan FranciscoUSA