Off-campus UMass Amherst users: To download campus access theses, please use the following link to log into our proxy server with your UMass Amherst user name and password.

Non-UMass Amherst users: Please talk to your librarian about requesting this thesis through interlibrary loan.

Theses that have an embargo placed on them will not be available to anyone until the embargo expires.

Access Type

Open Access

Degree Program

Psychology

Degree Name

Thesis (M.S.)

Year Degree Awarded

1972

Abstract

A processing-capacity notion of attention was defined in terms of increased reaction times (RTs) in a probe task at specific times during the performance of a primary task The primary task involved a same-different response to two letters presented successively. The probe task was either a Bonders type a or type c reaction to a burst of white noise, which could occur at any one of 8 times relative to the events on the letter-matching task. The study was specif ically designed to investigate the encoding of the f irst letter , which Posner and Boies (1971) concluded required no processing capacity. Here, displaying the first letter for 15 msec, and following it with a visual mask did result in lengthened RTs to probes presented simultaneously with the first letter. Increasing the difficulty of the probe task did not result in greater interference from the primary task. Data are discussed in terms of processes requiring capacity.

DOI

https://doi.org/10.7275/w71p-rr74

Share

COinS