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Discrimination
Discrimination
 In Phase 3, the students learn to discriminate between
preferred and nonpreferred icons
 The students le...
Nonpreferred vs. Neutral Items
 A non-preferred item is something the student does not like
and does not interact with
 ...
Homework Checkpoint 1
1. Give two examples of nonpreferred items.
2. How does a nonpreferred item become a neutral item?
Four Step Error Correction
MODEL
 Showing the student the
correct icon
 Gesture to the correct icon
 Use the prompt hie...
Four Step Error Correction
DISTRACT
 Distracting the student from
the placement of the icons
and to increase momentum
 F...
Tips for Four Step Error Correction
 You can repeat the correction up to 3 times at most
 Only take data on the initial ...
Tips for Four Step Error Correction
 After 3 incorrect trials in discrimination, move onto a
different procedure
 We do ...
Homework Checkpoint 2
3. What are the four steps of the Four Step Error Correction?
4. During the “Practice” phase, does t...
Correspondence Checks
 Correspondence checks are completed to make sure the
student is really discriminating between the ...
How to Conduct a Correspondence
Check
 After the student exchanges the icon, hold the items up and
say, “Go ahead and tak...
Tips for Conducting Correspondence
Checks
 Do NOT name the item before conducting a Correspondence Check!
 When in the c...
Homework Checkpoint 3
7. What do you say to the student when running a
Correspondence Check after they exchanged the icon?...
Discrimination
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Discrimination

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Discrimination

  1. 1. Discrimination
  2. 2. Discrimination  In Phase 3, the students learn to discriminate between preferred and nonpreferred icons  The students learn to attend to the specific icon they are exchanging  Both preferred and nonpreferred icons will be put on the front of the book  The Four Step Error Correction is used to correct incorrect exchanges in all of Phase 3  Correspondence Checks are completed when there are multiple preferred icons on the book, to ensure the child is exchanging the icon of the reinforcer they actually want
  3. 3. Nonpreferred vs. Neutral Items  A non-preferred item is something the student does not like and does not interact with  Examples: paper clip, spoon, tissue  A neutral item is something the student uses appropriately or engages with the item for more than 15 seconds but is not a reinforcer  Examples: using a spoon to eat, wiping their nose with the tissue  If you are using a non-preferred item and the student uses it functionally, it becomes a neutral item  Do not use that item in discrimination
  4. 4. Homework Checkpoint 1 1. Give two examples of nonpreferred items. 2. How does a nonpreferred item become a neutral item?
  5. 5. Four Step Error Correction MODEL  Showing the student the correct icon  Gesture to the correct icon  Use the prompt hierarchy PRACTICE  The student should hand the tutor the correct icon  Tutor can block incorrect icons and use prompts  After exchange, hold up icon and label it  Do not give the student the icon
  6. 6. Four Step Error Correction DISTRACT  Distracting the student from the placement of the icons and to increase momentum  Flip the book over and have the student complete and easy ELO REPEAT  Give the student another opportunity to exchange the correct icon  Flip the book back over and allow for an independent exchange  If correct, give them the toy with minimal praise  If incorrect, go through the Four Step Error Correction again
  7. 7. Tips for Four Step Error Correction  You can repeat the correction up to 3 times at most  Only take data on the initial trial  If you run the Four Step Error Correction, the trial will be incorrect  Always finish the error correction with a successful trial  Remove all other icons from the book during the third correction so only the preferred icon is left  Only switch icon positions after a correct response on the initial trial
  8. 8. Tips for Four Step Error Correction  After 3 incorrect trials in discrimination, move onto a different procedure  We do not want to punish responding  Code the procedure as “No MO”  Use as specific of icons as possible – do NOT use the “toys” icons  Do a lot of preference assessments for both preferred and nonpreferred items
  9. 9. Homework Checkpoint 2 3. What are the four steps of the Four Step Error Correction? 4. During the “Practice” phase, does the student receive the reinforcer? 5. How many times can you repeat the Four Step Error Correction in one trial? 6. What code will you ask the supervisor to use if you cannot find motivation for a toy or if you run 3 trials in a row that required the Four Step Error Correction?
  10. 10. Correspondence Checks  Correspondence checks are completed to make sure the student is really discriminating between the icons and choosing the icon that matches/corresponds with the reinforcer they “want”  Only used when the student is required to discriminate between preferred items
  11. 11. How to Conduct a Correspondence Check  After the student exchanges the icon, hold the items up and say, “Go ahead and take it.”  If the student choses the item that corresponds with the icon, allow them to take the reinforcer and mark the trial as correct  If the student choses an item that does not correspond with the icon, block access to the item, move directly into the Four Step Error Correction, and mark the trial as incorrect The item they reached for is the “correct” item
  12. 12. Tips for Conducting Correspondence Checks  Do NOT name the item before conducting a Correspondence Check!  When in the common area, try to move items as close together as possible  When in the booth, use a bin lid to easily present all of the items  You can block their second hand if they are reaching for more than one item  If you start a trial with a Correspondence Check and have to run the Four Step Error Correction, always run another Correspondence Check during the final phase of the correction
  13. 13. Homework Checkpoint 3 7. What do you say to the student when running a Correspondence Check after they exchanged the icon? 8. If the student chooses an item that does not correspond with the icon, block access to the item, move directly into the _____________, and mark the trial as ________. 9. True OR False: You should name the item before conducting a Correspondence Check. 10.What can you use to help run Correspondence Checks while working in the booth?

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