Masafumi Yanagihara

Executive function in children with pervasive developmental disorder and attention-deficit/hyperactivity disorder assessed by the Keio version of the Wisconsin card sorting test

The Wisconsin card sorting test (WCST) comprehensively examines executive function (EF). The Keio version of the WCST (KWCST) uses fewer cards and presents them in two steps, separated by a short pause during which an instruction is given. Being of short duration, this test is suitable for children with pervasive developmental disorder (PDD) and attention-deficit/hyperactivity disorder (AD/HD), yet few studies have examined the performance of children with such developmental disorders in the second step of a two-step test such as the KWCST. Using the KWCST, this study compares EF in children with PDD (n=52), or AD/HD (n=46) to that in typically developing (TD) children (n=52). Scores for the six indices of this test, including numbers of response cards until the first category achieved (NUCA), total errors (TE), and non-perseverative errors of Nelson (NPEN), were analyzed using ANOVA. Compared to the TD group, scores in the PDD and/or AD/HD groups were significantly lower for all indices except NUCA and NPEN for the first step, and lower for all indices except NUCA for the second step. Moreover, significantly fewer improvements in TE were seen in the PDD group, and significantly fewer improvements in NPEN were seen in the AD/HD group, compared with TD. This study suggests that both PDD and AD/HD make it difficult for children to utilize their experience in the first step and to effectively apply the instruction given before the second step. It also suggests that the two-step nature of the KWCST is clinically important.

Improving the Manners of a Student with Autism: The effects of manipulating perspective holders in Social Stories™ – A pilot study

This pilot study investigated the impact of manipulating the value of perspective sentences on improving the manners of a student with autism spectrum disorders. Three types of perspective sentences (sentences held by unknown persons, those held by familiar persons, and those held by the most preferred person) were alternately added to a Social Story™ to determine which perspective sentences were the most effective in improving the student’s head and elbow positions during sitting at morning circle and lunch. Results indicated that the effectiveness of a Social Story™ did not seem to depend on whose perspectives the story used. Findings suggest that depicting only the perspectives of the most preferred person in the story may not be sufficiently powerful to change behaviours.

Repair Strategies Used by Elementary-Age Beginning Communicators With Autism A Preliminary Descriptive Study

This descriptive study extends previous studies on communication repairs by (a) involving elementary-age children With autism Who are prelinguistic to emergent one-Word communicators and (b) examining repair strategies in terms of the relationships betWeen the conventionality and functionality of communication forms and the type of breakdoWn. Communication initiations and repairs emitted by three students With autism Were observed in natural settings in Which communication breakdoWns Were intentionally introduced. The students repaired almost all the breakdoWns regardless of type. Furthermore, they repaired communication breakdoWns effectively by adding semantic categories. They Were likely to adjust their repair strategies according to the social meaning of “Without attention.” When they repaired communication breakdoWns by modifications, they Were more likely to use less-conventional forms. The results are discussed in relation to interventions in communication competence.

Repair Strategies Used by Verbal Students With Autism During Free Play

This study assessed the repair strategies used by verbal students with autism (N = 12) when faced with verbal requests for clarification, gestural requests, not attending and not responding, and wrong responses. Data were collected in request contexts contrived by the communication partner during free play. The results indicated that most of the students repaired more than 80% of the communication breakdowns. In addition, they tended to choose communication forms that reflected the social meaning of the breakdown. However, they were likely to rely on unconventional forms when they faced wrong response breakdowns.