Friday, February 28, 2014

Basic vs. Applied Research

Basic vs. Applied Research

Basic: does not focus on real-world application, and instead it just tries to describe the fundamentals of behavior.

Applied: focuses on application in the real world, but it still is based upon previous theory and assumptions that are made. 



Try it.

In the field of ABA, are we more concerned with applied or basic research?











Applied.

Resources:  Cooper J.O, Heron T.E, Heward W.L. Applied behavior analysis (2nd ed.) Upper Saddle River, NJ: Pearson; 2007.

Tuesday, February 25, 2014

Test Tuesday

Which of the following is NOT a dimension of ABA?

Generality
Conceptually Effective
Behavioral
Technological






















Conceptually Effective is NOT a dimension of ABA.  Remember it is conceptually systematic.  See this post for a recap on the 7 Dimensions of ABA.

http://bcbatestprep.blogspot.com/2014/02/the-seven-dimensions-of-aba.html

Monday, February 24, 2014

Frequency, Rate, Duration, Latency, and Interresponse Time

Fourth Edition Task List.
Section 1
A-01, A-02, A-03, A-04, A-05

Frequency:  This is just how many times that a behavior occurred.
Remember, FREQUENCY=COUNT
Example:  The client screamed 7 times during the hour observation period.

Rate:  Ratio of count per observation time.
Example:  The client engages in an average of 16 instances of screaming per hour. 

Duration:  A measure of the total time that the behavior occurs.
Example:  One instance of screaming lasted for 37 seconds.

Latency:  The elapsed time from the onset of a stimulus to the time that the response started.
Example:  The teacher said touch dog, and 4 seconds later, the client touched the dog.  The latency is 4 seconds in this scenario.

Interresponse time (IRT): Elapsed time between two successive responses.
Example:  13 seconds passed in between the two instances of screaming.




You try.

1.  If you are tracking a behavior that usually lasts anywhere from 5 seconds to 3 minutes on average, what method would you use to measure the behavior?


Duration.



2.  Why is calculating IRT important?


Calculating IRT is a good way to determine an appropriate interval length for DRO schedules.  It will let you know how long the client goes on average WITHOUT engaging in a certain problem behavior.


Visit the following link for a powerpoint presentation comparing frequency, interval, and time-sampling methods of data collection.
http://bcbatestprep.blogspot.com/2014/06/comparison-of-frequency-interval-and.html



Sunday, February 23, 2014

Time-Out Procedures

So, most everyone has heard of time-out before.  A 4-year old girl hits her brother, and mom puts her in a chair and tells her that she must stay there for 2 minutes.  This is the only type of time-out that I had heard of before beginning by adventure with ABA.  However, who knew there were multiple types?

So, the two main types of time-outs according to Cooper, Herron, and Heward are non-exclusion and exclusion time-out.

1.  Exclusion:  The child is completely REMOVED from the environment.
2.  Nonexclusion:  The child may move around the area, but they are not completely removed from the environment. 

Types of Exclusion Time-Outs
1.  Time-Out Room:  This is when you take the child out of their environment into a separate room, but it is important that the room is not locked.  Make sure that all toys and potential reinforcers are removed from the room and minimal furniture is in the room for safety reasons.
2.  Partition Time-Out:  The child stays in the room/setting, but you can use some sort of partition to block them off.  Something like this can be used.
Found on Amazon
3.  Hallway Time-Out: This is your typical scenario.  Student yells in classroom or bothers other students, and the teacher says "Get in the hallway".  The problem with this type of time-out is that a) the student is able to talk to people in the hall/get other types of reinforcement, b) the student can easily escape, and c) the student is potentially escaping work (you could be reinforcing their behavior by allowing them to escape school work)


Types of Nonexclusion Time-Outs
1.  Planned Ignoring:  This is a very quick method of time-out because it just involves ignoring the child for a certain amount of time.  For example, every time a child yells at his mother to help him find a toy, the mom is going to "ignore" the child for 1 minute.  (Please note- in this scenario, an FCT response should be taught to teach the child an appropriate alternative to yelling.  Example:  "Mom, can you help me?" in an inside voice)
2.  Contingent Observation:  This is when the child is no longer able to participate in the desired activity, but they are able to watch the activities that are still going on.  Example: The child is jumping with friends at the trampoline park.  The child hits a friend, and the mom makes him sit on a bench next to the trampolines for a certain amount of time.  The child is still able to watch all of his friends jump, but he is not able to jump himself. 
3.  Time-Out Ribbon:  This is best explained with an example.  Sally wears a yellow ribbon around her wrist at all times.  She is able to access any reinforcers while she has the yellow ribbon on her wrist.  However, when she calls her friend "stupid" while playing legos, the yellow ribbon is removed from her wrist, and this is a signal that no reinforcement is available to her.  When the ribbon is removed all social interaction, tangibles, and other reinforcers are withheld, and Sally is not able to earn reinforcers until the yellow ribbon is back on her wrist after a certain amount of time.  She is not able to play legos or talk to her friend, or anything else during this time. 
4.  Withdrawal of a specific positive reinforcer:  This is when a reinforcer that is already present is removed for a certain period of time.  For example, Billy is watching tv.  He yells at his sister, and mom takes away Billy's tv for a certain amount of time.  You can also use this with a class.  For example, the entire class is watching a movie on Friday afternoon.  You constantly tell them to use their inside voices, but they continue to scream.  You can turn off the movie for a certain amount of time and the entire class is not allowed to watch the movie.  






Resources:  Cooper J.O, Heron T.E, Heward W.L. Applied behavior analysis (2nd ed.) Upper Saddle River, NJ: Pearson; 2007.

The Seven Dimensions of ABA


I am a very visual learner, so as I prepare for the BCaBA and BCBA, I thought it would be a great idea to create visuals for different concepts.

First up...  The Seven Dimensions of ABA based on Baer, Wolf, and Risley.  If you have not read this article, I highly recommend reading it.

Trick to Remember The 7 Dimensions of ABA: 
GET A CAB
Generality, Effective, Technological, Applied, Conceptually Systematic, Analytic, Behavioral
(Thanks BehaviorBabe for this great acronym)


However, remember that the BCBA is probably not just going to ask you, "What are the 7 dimensions of ABA?"  Instead, it might ask you an application based question about one of the dimensions, so it is important to be able to describe these in detail.  A visual with short definitions is below. 




Baer, D.M., Wolf, M.M., & Risley, T.R. (1968). Some current dimensions of applied behavior analysis. Journal of Applied Behavior Analysis1, 91-97