The use of packaged video modelling and video self-modelling techniques to facilitate conversational interactions for adolescents with autism, who use AAC

Author: Abirami Thirumanickam

  • Thesis download: available for open access on 27 Jul 2020.

Thirumanickam, Abirami, 2017 The use of packaged video modelling and video self-modelling techniques to facilitate conversational interactions for adolescents with autism, who use AAC, Flinders University, School of Health Sciences

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The aim of this study was to determine and compare the effectiveness of packaged video modelling

(VM) and video self-modelling (VSM) interventions in promoting reciprocal conversational

interactions for adolescents with ASD who use augmentative and alternative communication (AAC)


The research questions were addressed in three separate studies: (a) a pilot study, (b) Study 1, and

(c) Study 2. The studies were conducted using single-case research designs, namely multiple baseline

and alternating treatments designs. Five participants with ASD who used AAC aged between 10 and

18 years participated in the studies. Four scripts (two for video modelling and two for video selfmodelling)

were used during intervention for the pilot and main intervention studies. One script was

used to assess generalisation in the pilot study, while four additional scripts were used to assess

generalisation in the main intervention studies. The independent variable was the type of packaged

video-based modelling interventions: (a) video modelling plus instructional prompts and (b) video

self-modelling plus instructional prompts. The dependent variables were (a) the number of prompted

answers and turns during scripted conversations, and (b) type and number of prompts required in each

intervention session. The robust improvement rate difference (R-IRD) measure was used to determine

the size of the intervention effect.

Following the pilot study, changes were made in the conversation scripts used during the

intervention and generalisation measures in the main intervention studies. The conversation scripts

used in the main intervention studies reflected shorter scripts with more generalisable turns.

The overall results demonstrated that the VM and VSM were successful to facilitate conversation

skills for this group of participants when used in conjunction with least-to-most prompts. Without the

additional instruction, VM and VSM yielded small effects in four participants, and moderate effects

in one participant. The R-IRD estimates indicated moderate to large treatment effect sizes in four of

five participants for prompted conversational interactions. The findings also demonstrated prompts

were necessary to elicit interactions for this group of participants. Differential effects were noted

between VM and VSM, for two participants, where VSM with prompts demonstrated larger treatment

effects. Both, VM and VSM with prompts were equally effective for two others. Neither intervention

package was effective in eliciting interactions for one participant.

This research provides preliminary findings and implications for clinical practice and research on

the use of packaged video-based modelling intervention to develop conversation skills in adolescent

AAC users with ASD. Further research using a greater number of participants and different aspects

of video-based modelling (i.e., point-of-view modelling) is recommended.

Keywords: video-modelling, video self-modelling, adolescents, autism, ASD, augmentative and alternative communication, AAC, conversation

Subject: Health Sciences thesis, Speech Pathology thesis

Thesis type: Doctor of Philosophy
Completed: 2017
School: School of Health Sciences
Supervisor: Dr. Willem van Steenbrugge