Test 4 Tar & Naj Flashcards
first use of discrete trial
wolf risley and mees 64 (applied)
50s kids
discrete trial rise in popularity
lovaas 71
why is it discrete?
specific beginning and end
5 parts of Discrete Trial
antecedent stimulus (SD) prompt response consequence iti
3 kinds of responses
correct, incorrect, failure to respond
how long is ITI?
couple seconds, just long enough for data or reinforcement
advantages of dtt
many trials can take place in a session
training teachers is straightforward
data collection is easy
reinforcers can be prepared and distributed easily
Disadvantages of DTT
structure leads to rote responding
special programming required for generalization
may inhibit teachers ability to interact naturally with child
working on verbal operants other than manding may increase chance of problem behavior
DTT has demonstrated efficacy for
communication (expressive, receptive, conversation, comprehension)
social interaction
self care
escape/avoidance
adaptive/replacement behavior (toy play as replacement for stereotypy)
FA may determine demand so DTT can be used for FCT
Factors to be aware of before implementing DTT
skill level of practitioner
amount of DTT that may be appropriate
curriculum
and other methods that should be combined with DTT
how much DTT?
depends on child
before 4, 40 hrs per week is good
decrease as child progresses
What to combine DTT with?
incidental teaching
NET
pivotal response training
precision teaching