Icon Exchange

Contents

  • Facilitating Discrimination of Icons by Requiring Observing Response
  • Stimulus Fading Procedure to Establish Discrimination During the Icon Exchange System

Facilitating Discrimination of Icons by Requiring Observing Response

Hironobu Matsuoka (2014)

Abstract

Currently all students in our practicum site are learning to use the icon exchange which is based off of the Picture Exchange Communication System (Bondy & Frost, 1994). Students exchange icons corresponding to the items that they are motivated for to receive those items. This sequence of behaviors is sometimes very difficult for students to learn especially when learning discrimination of icons. We found our students were often not observing the icons before or during the exchange. This kind of problem is sometimes seen in other procedures such as matching-to-sample. Some studies reported that requiring an observing response improved accuracy during matching-to-sample. Based upon these studies, we think an observing response in the early phases of the icon exchange system may facilitate discrimination in the icon exchange. The purpose of the current study is to establish an observing response during an icon exchange chain. We will require our participants to observe icon before they exchange icon and test whether establishing this observing response will facilitate learning discrimination of icons. Thus, our goal is to contribute to the improvement of our children’s learning to use the icon exchange system by establishing the observing response.

Keywords

icon exchange, picture exchange, discrimination, social language, observing response

Materials

Stimulus Fading Procedure to Establish Discrimination During the Icon Exchange System

Kaitlyn Peitz (2014)

Abstract

Discriminating between pictures is a key component when using IES, and without discrimination IES is not functional as a communication device (Frost & Bondy, 2001). The purpose of this study is to teach discrimination between pictures of preferred and non-preferred items during phase 3 of the Icon Exchange System (IES). This will be done by changing the non-preferred icons along one physical dimension, and slowly fading them back to normal as the child progresses through the procedure. Stimulus fading procedures exaggerate some physical dimension (e.g., color, size, intensity) of a relevant stimulus to help a person make a correct response (MacDuff, Krantz, & McClannahan, 2001). The study was conducted with children diagnosed with autism in an Early Childhood Developmentally Delayed (ECDD) classroom where PECS is used as the primary method of communication for the students. Data will be presented on the children’s performance on phase 3 of IES. It is expected that the stimulus fading procedure will provide an alternative method to teach discrimination with IES in the ECDD classroom.

Keywords

icon exchange, picture exchange, stimulus fading, discrimination

Materials