Accession Number:

ADA347275

Title:

Detecting Phonemes and Letters in Text: Interactions Between Different Types and Levels of Processes

Descriptive Note:

Annual rept. 1 May 92-30 Apr 93

Corporate Author:

COLORADO UNIV AT BOULDER

Report Date:

1998-06-01

Pagination or Media Count:

57.0

Abstract:

In six experiments subjects detected phonemes or letters in text presented auditorily or visually. Experiments 1 and 2 provided support for the hypothesis that a mismatch between the phoneme and letter representations of a target leads to detection errors. In addition, visual word unitization processes were implicated. Experiments 3 and 4 provided support for the hypothesis that the Gestalt goodness of pattern affected detection errors when subjects searched for letters. Experiments 5 and 6 demonstrated that the effects of unitization on the detection of letters in common words were decreased by altering the familiar configuration of the test words. The combined results of all six experiments lead to the conclusion that both visual and phonetic processes influence letter detection, that these processes communicate through a type of cross checking, and that there are at least two levels of visual and perhaps of phonetic processing involved in the letter detection task.

Subject Categories:

  • Psychology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE