Generalized Schedule Following in a Youth with Autism

Abstract

Photographic activity schedules were used to increase on-task behaviour in a youth with autism. The multiple probe design included baseline, training, tests for training effects, resequencing of photographs, generalization to new photographs, and maintenance. The results showed that the participant was able to carry out four different chains (photographic activity schedules) without any prompts from the staff, even when the photographs were resequenced, and new photographs were included. On the other hand, there was no reduction of training trials to reach criterion from the first to the fourth chain. The results are discussed with reference to different aspects of generalization.     

Effects of a Multicomponent Intervention to Improve Reading Fluency in Adult Students

The purpose of the present study was to use a delayed multiple probe design to evaluate the effects of a multicomponent intervention on reading fluency in three adult Norwegian university students. Prior to the study, all the participants had below average reading speed and one had the diagnosis dyslexia. The present procedure consisted of reading support, fluency aim, repeated reading, performance feedback, and error correction. Training involved daily sessions where a passage was read four times in a session or until a predetermined fluency aim was reached. Each participant read 10 passages during the intervention. Maintenance, generalization, and reading comprehension were tested to evaluate characteristics of fluent performance. The main findings indicate that reading fluency of all the participants improved. Results are discussed with regard to (i) conducting a multicomponent intervention; (ii) maintenance of the achieved improvements; (iii) possible effects on reading comprehension; and (iv) social validity of the study. Copyright © 2016 John Wiley & Sons, Ltd.     

Training and testing music skills in a boy with autism using a matching‐to‐sample format

A 16‐year old boy with autism was taught music skills using a matching to sample procedure. He was trained and subsequently tested for the formation of four 4‐member classes, including different visual music stimuli, and Norwegian and Vietnamese labels for different major and minor chords. Four different stimuli sets were trained both in one‐to‐many (OTM) and many‐to‐one (MTO) training structures. Further, we explored if the reaction times to comparison stimuli increased from training to testing. Results showed that the participant formed equivalence classes with music relations. Furthermore, there were small differences only between OTM and MTO with respect to stimulus equivalence responding. The reaction times to comparison stimuli increased from training to testing, and were most pronounced for the equivalence trials. Copyright © 2010 John Wiley & Sons, Ltd.     

Analyzing conditions for recognizing pictures of family members in a patient with Alzheimer's disease

In the present study, an 89‐year‐old woman with the neurocognitive disorder Alzheimer's disease participated. The purpose was to study recognition of the participant's relatives' faces with the use of sorting tests and matching‐to‐sample (MTS) trainings and tests for emergent relations. The stimuli used were pictures of her relatives, their written names, and their family relationship. The study also focused on how responding to pictures of relatives changed over time. Therefore, the participant was presented with experimental conditions over three time periods. Time Period 1 included only sorting tests. In Time Period 2, which began 9 months after Time Period 1, the participant was presented with both sorting tests and conditional discrimination training and testing. In Time Period 3, which began 1 year after Time Period 2, both sorting tests and conditional discrimination training and testing were again presented. The results from Time Periods 2 and 3 showed that the percentage of stimuli sorted correctly was maintained over time. Additionally, the results from the MTS training and tests were maintained at the second follow‐up periods.     

Delayed Matching to Sample: Probability of Responding in Accord with Equivalence as a Function of Different Delays

The Psychological Record - The present series of 4 experiments investigated the probability of responding in accord with equivalence in adult human participants as a function of increasing or...     

A descriptive analysis of baseline and equivalence-class performances under many-to-one and one-to-many structures

The purpose of the present experiment was to describe responding as a function of One-to-Many (OTM) and Many-to-One (MTO) training structures and identify baseline performances correlated with the accuracy level in tests for equivalence class formation. Participants were 42 adults assigned to either the MTO or the OTM groups, trained on 24 baseline relations, and assessed on the emergence of three 9-member equivalence classes. Participants in the MTO group presented similar frequencies of responses to each of the comparisons throughout baseline training. Also, the number of trials required to meet the baseline mastery criterion was negatively correlated with test accuracy. Participants in the OTM group presented more variable frequencies of responses to each of the comparisons (participants tended to select some of the comparisons less often than others at the beginning of the training). In addition, the number of reinforced responses to the node presented as a sample during training was positively correlated with the number of correct responses during testing for the OTM group. The experiment contributed to an in-depth stimulus control analysis of baseline and test performances, and its results have implications for understanding potential sources of variability between the training structures.     

Equivalence relations do exist before they are tested: Confirmatory evidence revealed by EEG measurements

We examined equivalence-based N400 effects by comparing EEG data from participants with different experiences with equivalence testing. Before a priming task used in EEG measurement, Group 1 was given only matching-to-sample training trials whereas Group 2 was exposed to matching-to-sample training and equivalence probe trials. We asked whether exposure to the reinforcement contingency was sufficient to bring about an N400 outcome that might indicate potentially emergent equivalence relations or if such a response depended on experience with equivalence tests. Results showed robust N400 in both groups. Experience with equivalence tests did not further increase the N400 effects. Our findings add confirmatory evidence that equivalence relations may originate via the reinforcement contingency alone. Furthermore, complementary EEG data collected from priming tasks involving words from natural language showed functional overlap between laboratory-defined equivalence and natural word-based N400 effects.     

On the effectiveness of including meaningful pictures in the formation of equivalence classes

In three experiments, 165 adult participants were trained on 12 baseline conditional discriminations and tested for the formation of three 5-member equivalence classes (A➔B➔C➔D➔E). All experiments included two reference groups; the abstract (ABS) group was trained with all abstract stimuli and the picture (PIC) group with C-stimuli as meaningful pictorial stimuli but A, B, D, and E stimuli as abstract shapes. In Experiment 1, the color of the meaningful stimuli was manipulated. In the ABS, PIC, and black-and-white groups, 33.3%, 80%, and 93.3% formed equivalence classes, respectively. In Experiment 2, participants were exposed to a test block with and without trials that included C stimuli. For the groups with and without C trials in the test, 93.3% and 86.7% formed equivalence classes, respectively, compared to 20% in the ABS group. In Experiment 3, the number of meaningful pictures and their location in stimulus classes were manipulated. One group was trained with 3 pictures (C1/B2/D3, the 3-PIC) while the other groups had 2 pictures (C1/B2 and C1/D3, the 2-PIC). In the second test block for the ABS and PIC groups, 6.7% and 86% of the participants formed equivalence classes, respectively. For the 3-PIC and the 2-PIC groups, 66.7% and 50% of the participants formed equivalence classes, respectively. Results suggest that the effects of meaningful stimuli in equivalence classes (a) cannot be attributed to the use of colorful stimuli in previous studies, (b) occur during training and are not dependent on the presence of meaningful stimuli at test, and (c) are sensitive to stimulus location.