Background: Staff may encourage individuals with intellectual disabilities to use manual signs by modelling its use, but implementing key word signing during daily activities can be demanding. Method: Staff's use of manual signs was observed in four special schools and four day centres for adults with intellectual disabilities during communicative…

Expressive language is an important skill to develop in children with intellectual disabilities. It not only aids in decreasing the likelihood of challenging behaviors from occurring but also aids in increasing the individuals independence and assistance in them becoming successful members of society. No previous studies have examined the…

A literature review was conducted to describe important concepts involved in functional analysis of verbal behavior as well as to evaluate empirical research findings on acquisition of picture exchange-based vs. signed mands to suggest instructional implications for teachers and therapists to teach functional communication skills to children with…

This study investigated the effect of matching-to-sample and mimetic-relations teaching on the emergence of signed tact and textual repertoire through a multiple-baseline design, across three groups of three words in children with and without hearing impairments and with no reading repertoire. Following mimetic-relations teaching and the…

Children with autism spectrum disorder (ASD) who have native exposure to a sign language such as American Sign Language (ASL) have received almost no scientific attention. This paper reports the first studies on a sample of five native-signing children (four deaf children of deaf parents and one hearing child of deaf parents; ages 4;6 to 7;5)…

We first review the mirror-system hypothesis on the evolution of the language-ready brain, stressing the important role of imitation and protosign in providing the scaffolding for protospeech. We then assess the role of social interaction and non-specific knowledge of language in the emergence of new sign languages in deaf communities (focusing on…

Infants enter the world prepared to learn about their environments and to become effective social partners, while most parents are equally prepared to support these early emergent skills. Through subtle, non-conscious behaviors, parents guide their infants in the regulation of emotions, language acquisition, and participation in social exchanges.…

The functions of an American Sign Language response were experimentally evaluated with a young boy diagnosed with autism. A functional analysis procedure based on that reported by Lerman et al. (2005) was used to evaluate whether the target sign response would occur under mand, tact, mimetic, or control conditions. The target sign was observed…

The objective of this study was to teach manual signs through an automated matching-to-sample procedure and to test for the emergence of new conditional relations and imitative behaviors. Seven adults with mild to severe mental retardation participated. Four were also hearing impaired. Relations between manual signs (set A) and pictures (set B)…