ABA Student Research in Auckland: Illustrations of a Scientist-Practitioner Approach Oliver Mudford, PhD, BCBA Angela Arnold-Saritepe, PhD, BCBA Dennis.

ABA Student Research in Auckland: Illustrations of a

Scientist-Practitioner Approach

Oliver Mudford, PhD, BCBAAngela Arnold-Saritepe, PhD, BCBADennis Rose, PhD

ABA International, Sydney - August 13th 2007

Research Opportunities in ABA Postgraduate Programme

• Year 1Coursework projects– Preference and Reinforcer Assessment– Functional Assessment

• Year 2– Master’s thesis (Full-time 1 year research)

• Year 3– Scientist-practitioner research in supervised

fieldwork settings (across 12 months)

• Post-BCBA – PhD research

Research with adult populationsThree examples supervised by Oliver Mudford

Katrina Phillips, MSc, PGDipAppPsych Residential intellectual disability service

Erika Ford, MA, PGDipAppPsychResidential ABI/TBI rehabilitation facility

Janine Locke, MSc Dementia care residential unit

Comparison of Interventions to Decrease Grabbing by a

Man with Intellectual Disabilities

Katrina PhillipsABA Programme Graduate 2007

• Function of behavior – Social Positive Reinforcement

• Decreasing problem behavior over two time periods using– NCR– Engagement– Extinction– Combinations of the above

Programme

Figure 1. Frequency of BN’s grabbing during the morning shift (90 mins). Graph shows four different interventions: baseline (no intervention), task engagement and extinction, task engagement, extinction and NCR, or extinction and NCR.

Outcome

Grabbing of other residents reduced to zero with a combination of providing engaging activities for BN, non-contingent attention on a FI-5 min schedule, and attending minimally to instances of grabbing

Staff maintained intervention beyond the data shown.

Teaching Face Recognition to an Adult with Brain Injury

Erika Ford ABA Programme Graduate 2007

Matching to Sample Task

• Female with Acquired Brain Injury

• Deficit in name-face matching

• Matching to Sample procedures implemented to teach face matching– Within-stimulus prompting strategy – Photo quality of comparison pictures

systematically ‘faded in’

Matching to Sample Results

Figure 1. The percentage of correct responses emitted during a matching-to-sample task of photos of identical faces. Level 1-3 indicate the level of within-stimulus prompt.

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Discussion

• Matching to Sample procedures were unsuccessful at teaching face matching

• Assessment of Basic Learning Abilities (ABLA) conducted

– Visual discrimination, visual matching-to-sample and auditory-visual discrimination difficult to learn via standard prompting and reinforcement procedures

• Further research required on the predictive value of the ABLA for teaching adults with brain injury

Reduction of Non-social Vocalisations for a Man with

Dementia: Serendipitous Intervention

Janine Maari LockeFinal year ABA student

Aim

To investigate the influence of music

on LS’s non-English (and non-Thai)

chanting and repetitive speech-like

vocalisations that were annoying

other residents of a dementia care

unit

Method• Alternating treatments design

• 4 Conditions- baseline, music out loud, headphones with music, and headphones without music

• During each session the 4 conditions ran for 5-mins each, one after the other (the conditions were randomly ordered)

• Recorded 10s whole intervals of quiet

• IOA on 30% of trials 90-100%

Discussion• Music may be effective for this

automatically reinforced behaviour for this man because it provides alternative auditory stimulation

• The data do not reveal the type of noise LS made while listening to music with headphones, it was often only a slight ‘mm’ or ‘ah’ rather than the loud chanting that was observed during baseline

• Data collection is continuing

ABA Research for Children

Angela Arnold-Saritepe, BCBA

Research with child populationsThree examples supervised by Angela Arnold-Saritepe

Sheree Adams, MA, PGDipAppPsych Residential Children’s ID Service

Rachel Pearce, MSc, PGDipAppPsychMainstream Primary School

Katrina Phillips, MSc, PGDipAppPsych Special School

The Use of a Shaping Procedure to Teach PECS to

a 14-yr-old Boy with Cerebral Palsy and an Intellectual Disability

Sheree Adams ABA Programme Graduate 2007

Picture Exchange Communication

• An augmentative communication system developed by Bondy and Frost (1994).

• Influenced by Skinner’s description of the verbal operants (1957).

• Focus on student initiated communication.

• Participant and setting– CM lived in a fully staffed residential facility

• Objectives– Increase the distance travelled to exchange

an icon for a preferred item– Increase the distance travelled to obtain the

icon.

• The experimental design was changing criterion.

Phase II (Distance and persistence)

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Figure 2 : Distance travelled in metres to communication book to retrieve picture of preferred item to exchange for the item from communication partner for CM during training in Phase IIb Picture Exchange Communication system with listener. F/U are follow-up sessions.

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Criterion distance

• Shaping with reinforcement was used to teach CM to travel towards a communication partner and to a PECs book to make an exchange.

• The intervention was over three months, follow up at two months indicated that gains had been maintained.

Results and conclusion

A Comparison of Two Methods for Teaching

Sight Words toPrimary School Children

Rachel PearceABA Programme Graduate 2007

Reading acquisition program

• Compared Cover Copy Compare and Response Repetition methods for teaching high frequency sight words.

• Participants = three students (one with a diagnosis of ASD); ages 9 & 10 years; mainstream primary school.

• Benefit = mastered words may give access to other reading sources & their associated reinforcers sooner than other methods

Method

• Alternating treatments design

• 15 min intervention per day per child until 20 words mastered; additional words taught using most successful method for that student

• Reinforcement Token economy system, correct response = sticker, full sticker chart = prize

Discussion points• Generalisation testing conducted across tasks

(reading words on flash cards, in sentences, & spelling), maintenance of mastered words over time.

• Superiority of one method over other not clear – learning histories of students or procedural differences?

• Processes of enhanced stimulus control & negative reinforcement may increase correct responding, but difficult to determine contribution of each.

Using Shaping to Increase Swimming Pool Access by a

12-year-old Boy with Autism

Katrina PhillipsABA Programme Graduate 2007

Shaping Programme

• Highly preferred item– Twiddling shoelace

• Initial behaviors – No approach or approaching edge of pool.

• Terminal behavior– Moving out into pool

Point of last reinforcer in session

No reinforcer available

Reinforcer available but never received

Point of first reinforcer in session

Figure 1. Level of access to the pool both within and across sessions.

Outcome

• The boy appeared to enjoy being in the pool instead of cowering away from it

• His parents were pleased with the effects of intervention

• Teachers at the school were delighted also• This project showed the school that ABA can

have real functional value

The End