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

Document Type


Degree Program


Degree Name

Thesis (M.S.)

Year Degree Awarded



The present study was conducted in order to determine whether or not HR could be conditioned in 3 month old infants. The conditionability of HR as an autonomic response was viewed in terms of Brackbill and Fitzgerald's (1969) hypothesis regarding differential conditioning results as a function of measuring an autonomic rather than a somatic response. The relative scarcity of conditioning studies measuring autonomic responses prompted a study by Clifton (1970, unpublished data) which yielded inconclusive results. The present study was designed as a replication of the Clifton study with several modifications