The blocking effect of pictorial prompts on sight-word reading

This study replicates and extends previous work showing that pictorial prompts can interfere with the learning of sighs words by students with moderate mental retardation. Effects of training with 6 students were assessed during five conditions using an alternating treatments design. In four conditions, words were presented either alone or with a corresponding picture. In a fifth condition, pictures were used to provide feedback. The results showed that: acquisition was achieved fastest during the word-alone conditions with 5 students.