You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Cardiac Classical Conditioning and Reversal in the Mongoloid, Encephalopathic, and Normal Child
James D. Block, Eugene A. Sersen and Joseph Wortis
Vol. 41, No. 3 (Sep., 1970), pp. 771-785
Stable URL: http://www.jstor.org/stable/1127223
Page Count: 15
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
Classically conditioned cardiac discrimination and reversal was observed in retarded and normal children. During initial conditioning (10 stimulus pairs) only the oldest normal group (6-11 yrs) evidenced significant stimulus discrimination. During subsequent reversal (10 stimulus pairs), both the oldest and an intermediate normal group (4-6 yrs) evidenced significant discrimination. Mongoloid children (4-11 yrs) and the youngest Normal group (2-4 yrs) evidenced no consistent cardiac discrimination. Encephalopathic children (6-11 yrs) evidenced significant discrimination during reversal, but in a manner inappropriate to the reinforcement contingencies. This behavior, unique in both CA and MA comparisons of encephalopathics with mongoloids and normals, may be related to a somewhat impaired conditioning and a more greatly impaired extinction process, or to a deficit in the Pavlovian postulated process of CNS mobility.
Child Development © 1970 Society for Research in Child Development