Date of Award


Degree Name

Specialist in Education



First Advisor

Dr. Galen Alessi

Second Advisor

Dr. Paul Mountjoy

Third Advisor

Dr. Howard Farris

Access Setting

Masters Thesis-Open Access


The feasibility of using the Hutchings' "Low-Stress" algorithm for the development of addition skills in trainable mentally impaired pupils was investigated in this exploratory diagnostic study. The four subjects were identified as trainable mentally impaired pupils (IQ 44-63), three females and one male, between eighteen and twenty years of age. Results indicate increased power with counting and numeral recognition. Results from "Low-Stress" training phases indicate an increasing trend in binary accuracy and rate. Diagnosis of error patterns resulted in adjustments in teaching strategies. Results support the feasibility of "Low-Stress" algorithm for addition skill development in trainable mentally impaired pupils with counting and number recognition preskills. Training for all phases of the algorithm were not completed due to lack of time. It is suggested that future research investigate use of the Hutchings' "Low-Stress" algorithm with pupils having all the preskills .