Establishing praise as a conditioned reinforcer: Pairing with one versus multiple reinforcers

Praise and other forms of attention may not function as reinforcers for the behavior of children with autism. Previous research demonstrated that contingently pairing praise with reinforcers (response stimulus) can establish praise as a conditioned reinforcer. We evaluated a procedure for establishing praise as a generalized conditioned reinforcer (pair praise with four reinforcers) and compared it with a procedure to establish praise as a conditioned reinforcer (pair praise with one reinforcer). We compared the two conditions in a reversal design with “praise” and “no programmed consequence” conditions rapidly alternated after pairing phases. With three out of five participants with autism, responding in the “pair‐with‐four” condition showed higher levels of responding or more increasing trends compared with that in “pair‐with‐one” condition. We also replicated previous contingent pairing research with two participants in a multiple baseline across participants design. A limitation was the absence of manipulating motivating operations in assessing the efficacy of praise as a generalized conditioned reinforcer. Nevertheless, these data contribute to the research on establishing praise as a reinforcer, and we recommend directions for future research.     

A DISCRIMINATION TRAINING PROCEDURE TO ESTABLISH CONDITIONED REINFORCERS FOR CHILDREN WITH AUTISM

Although conditioned reinforcers are used in many behavioral intervention programs for individuals with developmental disabilities, little research has been conducted to determine optimal methods for establishing conditioned reinforcers. An early method that has received relatively little research attention is to condition a neutral stimulus as a discriminative stimulus and then use the stimulus as a programed consequence during skill acquisition. The current study evaluated the effects of a discrimination training procedure on establishing conditioned reinforcers for three children with autism. For all participants, previously neutral stimuli reinforced behaviors after acquiring discriminative properties during discrimination training. Copyright © 2014 John Wiley & Sons, Ltd.     

OBSERVATIONAL EFFECTS ON THE PREFERENCES OF CHILDREN WITH AUTISM

Children with an autism spectrum disorder (ASD) may play with limited objects or toys, making it difficult for teachers to identify reinforcers to use in teaching new skills. The goal of this study was to alter children's preferences from highly preferred toys to toys that were originally less preferred using an observational pairing procedure. Child participants observed a preferred adult playing with toys that were initially less preferred by the child. This intervention resulted in a shift in preference toward the item manipulated by the adult. Maintenance of the changed preference was idiosyncratic across participants. Results suggest a procedure for expanding the range of items that students with ASD will select.     

Error correction in discrimination training for children with autism

Three procedures for correcting errors made during discrimination training were examined: error statement (saying ‘no’), modeling the correct response, and No Feedback. Six children with autism (age 3–7 years) were taught to match words to pictures with each of the three procedures, and the number of trials to mastery was compared across conditions. Results varied across participants. Two participants performed as well with no feedback as they did with an error correction procedure; two acquired skills slightly more quickly with an error correction procedure than with no feedback, but showed no difference between error correction procedures; one did best with error statement; and one did best with modeling. Results indicate that the choice of error correction procedure can have a large effect on rate of skill acquisition but that the optimal procedure may vary across individuals. Copyright © 2006 John Wiley & Sons, Ltd.     

In situ Training for Increasing Head Start After-Care Teachers’ Use of Praise

This study tested the effects of the direct behavioral consultation in situ training procedure for increasing Head Start teachers’ praise during an after-school program. Participants included four Head Start teachers in one Head Start center. A multiple baseline design across teachers was employed to test the effects of in situ training on teachers’ praise rate. Maintenance of the training procedure was evaluated 1 week following termination of training and again at 1-month follow-up. Results indicated that all teachers delivered praise below the expected rate (i.e., 1 praise statement per minute) during baseline, and in situ training resulted in an immediate and substantial increase in praise for all four teachers. Three of four teachers maintained increased praise during the maintenance phase and again at 1-month follow-up. One teacher’s praise decelerated during maintenance, and that teacher received additional in situ training. However, for that teacher, praise rate again decelerated following the second in situ training phase, and additional consultation procedures were necessary for increasing praise rate. Results are discussed in terms of the consultation research and applied practice.     

The differential outcomes effect in children with autism

The differential outcomes procedure uses reinforcement unique to each alternative in a conditional discrimination, leading to faster and more accurate learning relative to non‐differential outcomes procedures. In this study, the differential outcomes procedure was used to teach novel tacts of musical instrument sounds to children with autism. For one set of instruments, response‐specific reinforcers were used in combination with social reinforcement. For the other set, reinforcers were provided non‐differentially. Two out of three participants showed enhanced learning in the differential outcomes condition, providing some support of the differential outcomes procedures as a useful tool for teaching individuals with autism. Future research into the differential outcomes effect is warranted to identify the procedural and individual factors that predict its effectiveness.     

IDENTIFYING REINFORCERS FOR PERSONS WITH PROFOUND HANDICAPS: STAFF OPINION VERSUS SYSTEMATIC ASSESSMENT OF PREFERENCES

We evaluated a systematic means of determining stimulus preferences among seven profoundly handicapped persons. Preferences were determined by observing student approach responses to individual stimuli. Results indicated that there were differential stimulus preferences across the multiply handicapped participants. However, results of the systematic assessment did not coincide with the results of a more traditional, caregiver-opinion method of assessing student preferences. A second experiment was then conducted with five participants to evaluate whether stimuli that were assessed to consistently represent preferences would function as reinforcers in skill training programs. Results indicated that stimuli that were systematically assessed to represent student preferences typically functioned as reinforcers when applied contingently. However, preferred stimuli as reflected by caregiver opinion did not function as reinforcers unless those stimuli were also preferred on the systematic assessment. Results are discussed in terms of assisting profoundly handicapped persons by (a) improving the effectiveness of training programs by increasing the likelihood of using stimuli that have reinforcing value and (b) increasing the overall quality of life by providing preferred stimuli in the routine living environment.     

Response to name in children with autism: Treatment,generalization, and maintenance

Deficits in response to name (RTN) are an early indicator of autism spectrum disorder (ASD), and RTN is a treatment goal in many early intervention curricula for children with ASD. However, little research has empirically evaluated methods for increasing RTN in children with ASD. We evaluated a series of conditions designed to increase RTN for 4 children with ASD using a multielement experimental design. The schedules of tangible reinforcement were thinned after mastery and generalization was tested across people and contexts. Tangible reinforcers were necessary to increase RTN for all 4 participants, and the schedule of reinforcement was successfully thinned with all participants after intervention. Generalization was also observed across people and experimental contexts.     

The role of verbal behavior in the establishment of comparative relations

Twelve college students received conditional discrimination training with nonarbitrary and arbitrary stimuli, and derived comparative and transformation of function tests with a think-aloud condition across 2 experiments. Participants who failed these tests received remedial verbal operant training. Four control participants received verbal operant training alone. Across both experiments, only 1 participant passed the derived comparative test after conditional discrimination training. However, all participants passed derived comparative tests and 11 out of 12 participants passed transformation of function tests following verbal operant training, including the 4 control participants. Participants who passed derived comparative tests engaged in a high percentage of correct vocalizations during the think-aloud condition, while participants who failed did not. These results suggest that mediating verbal behavior could have played a crucial role in participants' responses during derived stimulus relations tests.     

Choice for reinforced behavioral variability in children with autism spectrum disorder

Although individuals with autism spectrum disorder (ASD) tend to behave repetitively, certain reinforcement contingencies (e.g., lag schedules) can be used to increase behavioral variability. In a lag schedule, reinforcers only follow responses that differ from recent responses. The present study was designed to promote variable play behavior in preschoolers with ASD interacting with playsets and figurines and to assess preference for variability and repetition contingencies. Data have shown a preference for variability in pigeons and college students, but this effect has not been explored in clinical populations. In this experiment, preschoolers with ASD were taught to discriminate between variability and repetition contingencies. Only play behaviors that met a lag schedule were reinforced in the presence of one color, and only repetitive behaviors were reinforced in the presence of another. After differential performance was established, participants experienced a concurrent chains schedule. Participants chose between the colors taught in training and then completed a play session with the selected contingency. One participant selected variability and repetition equally. The other participants showed a slight preference for variability. These results indicate that some individuals with ASD may play repetitively, not because they prefer repetition, but because they require additional teaching to play variably.     

DIFFERENTIAL RESPONSE PATTERNS TO THE CONTROL CONDITION BETWEEN TWO PROCEDURES TO ASSESS SOCIAL REINFORCERS FOR CHILDREN WITH AUTISM

Historically, reinforcer assessment procedures focus primarily on identifying nonsocial reinforcers (e.g., tangibles and edibles). Far less empirical attention has been allocated to the systematic identification of social consequences that function as reinforcers. This discrepancy is problematic given that social consequences are commonly incorporated into behavioral treatment programs without systematic evaluation of their efficacy. In this study, two methodologies (a single operant and a concurrent choice) were used to assess social reinforcers for children with autism. Results highlighted differences in response allocation to the control condition between procedures. Specifically, responding occurred in the control condition of the single‐operant procedure but not in the concurrent‐operant procedure. These differences highlight the need for further evaluation of procedures to assess social reinforcers. Copyright © 2013 John Wiley & Sons, Ltd.     

The development of stimulus control over tics: A potential explanation for contextually-based variability in the symptoms of Tourette syndrome

Research has demonstrated that providing reinforcement for tic-free intervals can decrease tic frequency in controlled analogue settings. The aim of the current study was to determine whether reinforcement could be used to create stimulus control over tic expression. Ten children with chronic tic disorders (including Tourette syndrome) completed four discrimination training sessions. Each session consisted of three exposures to each of three, 5 min conditions presented in a random order. In one condition, participants were reinforced for tic absence on a 10-s fixed interval schedule in the presence of a purple light. In a second condition, participants were instructed to suppress their tics, but were not reinforced for doing so in the presence of an orange light. In a third condition, participants were instructed not to suppress their tics in the presence of two non-illuminated lights. Confirming findings from other studies, results showed that reinforcing tic suppression reduced tic frequency to a greater extent than only providing instructions to suppress. To test for stimulus control, a fifth session was conducted following the aforementioned discrimination training sessions. The fifth session consisted of three exposures to each of three 5 min conditions presented in a random order. In one condition, a purple light was illuminated. In a second condition, an orange light was illuminated. In a third condition, neither light was illuminated. Across all three conditions, instructions to suppress (or not suppress) tics were not provided, and reinforcers for successful suppression were not delivered. Results indicated that in the presence of the purple light, tics were significantly lower than when neither light was illuminated. These findings provide preliminary support for the idea that a history of differential reinforcement in various contexts may play a role explaining variability in tic symptom expression.     

Dimensional stimulus control following brief wavelength training

Pigeons with extensive training pecking a key illuminated by a white line then had brief training with the key illuminated by 555 nanometers. This was immediately followed by a wavelength generalization test in extinction. Dimensional stimulus control about the training wavelength increased with the duration and number of reinforcements given on variable-interval 30-sec and variable-interval 10-sec schedules in Experiment I. In Experiment II, dimensional stimulus control was obtained after only 4 min of wavelength training from birds with prior and independent discrimination training. Experiment III provided groups equated in number of reinforcers with groups in Experiment I and two 8-min duration groups. Analyses, which included results from both Experiments I and III, showed that dimensional stimulus control increased: (a) more rapidly as a function of the duration of variable-interval 10-sec than variable-interval 30-sec reinforcement; (b) at the same rate across variable-interval reinforcement schedules, as a function of the number of reinforcers available during brief wavelength training.     

Gross-motor skill acquisition by preschool dance students under self-instruction procedures

The effects of two training procedures--(a) modeling and praise and (b) self-instruction, modeling, and praise--on complex gross-motor chain acquisition for preschool dance class students were evaluated. Six girls participated in the study. A multiple baseline design across six gross-motor chains with a secondary group comparison for treatment order effects was used. Both procedures were effective in teaching the gross-motor chains. Nevertheless, for 4 of the 6 participants, the self-instruction procedure produced a faster acquisition rate in at least two of the three comparable pairs of gross-motor chains. Furthermore, very early in gross-motor chain acquisition, for five of the six gross-motor chains, the self-instruction condition was associated with faster response acquisition.     

Matrix Training for Generative Spelling in Children with Autism Spectrum Disorder

Children with autism often have difficulty in generative learning. Effective training program for generative learning in these children is needed. In this study, we examined the effectiveness of matrix training for generative spelling in two children with autism spectrum disorder (ASD). Matrix training is a procedure in which stimuli used in teaching are arranged with overlapping within‐syllable units. After training with a Constructed‐Response Matching to Sample (CRMTS) with matrix training, both participants' generative spelling was assessed by CRMTS test using untrained combinations of characters. In this study, spoken syllables (auditory stimuli) are presented as the sample stimulus, and written characters (visual stimuli) are presented as comparison stimuli in CRMTS task. As a result, both participants showed generative spelling by matrix training, however, one of the two participants needed additional matrix training. The results discussed the effectiveness of matrix training as a procedure for teaching generative spelling and some issues to be conducted in applying this procedure for Japanese reading and spelling in children with ASD. Copyright © 2011 John Wiley & Sons, Ltd.     

Resistance to extinction versus extinction as discrimination

The hypothesis that response strength might be measured by persistence of responding in the face of extinction was discredited in the 1960s because experiments showed that responding persists longer following intermittent reinforcers than following continuous reinforcers. Instead, researchers proposed that the longer persistence following intermittent reinforcers arises because intermittent reinforcement more closely resembles extinction—a discrimination theory. Attention to resistance to extinction revived because one observation seemed to support the persistence hypothesis: Following training on a multiple schedule with unequal components, responding usually persisted longer in the formerly richer component than in the formerly lean component. This observation represents an anomaly, however, because results with single schedules and concurrent schedules contradict it. We suggest that the difference in results arises because the multiple-schedule procedure, while including extensive training on stimulus discrimination, includes no training on discrimination between food available and food unavailable, whereas comparable single- and concurrent-schedule procedures include such training with repeated extinction. In Experiment 1, we replicated the original result, and in Experiment 2 showed that when the multiple-schedule procedure includes training on food/no-food discrimination, extinction following multiple schedules contradicts behavioral momentum theory and agrees with the discrimination theory and research with single and concurrent schedules.     

Teaching children with autism spectrum disorder to tact olfactory stimuli

Research on tact acquisition by children with autism spectrum disorder (ASD) has often focused on teaching participants to tact visual stimuli. It is important to evaluate procedures for teaching tacts of nonvisual stimuli (e.g., olfactory, tactile). The purpose of the current study was to extend the literature on secondary target instruction and tact training by evaluating the effects of a discrete‐trial instruction procedure involving (a) echoic prompts, a constant prompt delay, and error correction for primary targets; (b) inclusion of secondary target stimuli in the consequent portion of learning trials; and (c) multiple exemplar training on the acquisition of item tacts of olfactory stimuli, emergence of category tacts of olfactory stimuli, generalization of category tacts, and emergence of category matching, with three children diagnosed with ASD. Results showed that all participants learned the item and category tacts following teaching, participants demonstrated generalization across category tacts, and category matching emerged for all participants.     

Using progressive ratio schedules to evaluate tokens as generalized conditioned reinforcers

The properties of operant reinforcers are dynamic and dependent on a number of variables, such as schedule and effort. There has been sparse research on the generalized conditioned properties of token reinforcement. We evaluated leisure items, edible items, and tokens using a progressive ratio schedule with three children with diagnoses of ASD and developmental delays. The highest break points occurred during the token reinforcement condition for two out of three participants, but response rates tended to be higher with edibles. We then evaluated the effects of presession access to edibles on the break points of edible items and tokens with two participants. Break points decreased only in the edible reinforcement condition, and the participants chose to work for leisure items rather than edibles when presession access to edibles was in place. These findings suggest that the tokens functioned as generalized conditioned reinforcers.     

Mediating Access to Headsprout<Superscript>®</Superscript> Early Reading for Children with Autism Spectrum Disorders

Many children with autism spectrum disorder (ASD) require instructional programs that simultaneously address academic content, interfering behavior, and potential gaps in prerequisite skills for a given curriculum. This study examined the impact of an intervention package consisting of contingent reinforcement and match-to-sample training on the independent progression of 3 children with ASD through Headsprout^® Early Reading (HER), a behavior analytic online reading program. A multiple probe across participants design was used to examine the effects of the intervention package on participants’ correct interactions per minute and total episodes completed. Transfer of training to oral reading of companion print books was also assessed. All participants demonstrated an increase in correct interactions per minute. Two participants learned to independently complete a HER episode each day and could orally read companion print books. The results suggest individualized behavior analytic programs can support the use of HER as a computer-based reading program for some children with ASD.