At a glance
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Retrieval-Based Word Learning in Developmental Language Disorder: Verb Learning
In Brief
A clinical study evaluating Retrieval-based verb learning: Repeated Spaced Retrieval condition and Retrieval-based verb learning: Repeated Study condition for Developmental Language Disorder and 2 related conditions. Completed, enrolled 31 participants across 1 site.
Detailed Summary
Children with developmental language disorder (DLD; also referred to as specific language impairment) experience a significant deficit in language ability that is longstanding and harmful to the children's academic, social, and eventual economic wellbeing. Word learning is one of the principal weaknesses in these children. This project focuses on the word learning abilities of four- and five-year-old children with DLD. The goal of the project is to build on the investigators' previous work to determine whether, as has been found thus far, special benefits accrue when these children must frequently recall newly introduced words during the course of learning. The focus of the current study is verb-learning. The goal of the study is to increase children's absolute levels of verb learning while maintaining the advantage that repeated retrieval holds over comparison methods of learning.
Study Details
Timeline
Interventions
A set of novel verbs are practiced on 2 consecutive days (the same verbs are used each day). Half of the novel verbs are learned in the repeated spaced retrieval condition and half are learned in the repeated study condition, with the two conditions interleaved on each day. The repeated spaced retrieval condition consists of study and retrieval trials. At the start of the sessions, retrieval trials immediately follow study trials. Thereafter, retrieval trials are spaced for each verb, occurring after 3 other words have intervened between the retrieval trial and the last study trial for that verb.
A set of novel verbs are practiced on 2 consecutive days (the same verbs are used each day). Half of the novel verbs are learned in the repeated spaced retrieval condition and half are learned in the repeated study condition, with the two conditions interleaved on each day. The repeated study condition consists of study trials only (with no retrieval practice).