Final answer:
In Discrete Trial Training (DTT), the teaching phase not included is Toleration. Generalization and Stimulus Control are legitimate phases of DTT, whereas Toleration is not typically associated with DTT methodology.
Step-by-step explanation:
The teaching phase not included in Discrete Trial Training (DTT) is C. Toleration. DTT is a structured method of teaching that involves a clear beginning and end to each learning opportunity. The teaching phases typically include presenting the instruction, prompting the correct response if necessary, reacting to the student's response with a consequence such as reinforcement or correction, and a short pause before presenting the next instruction.
Generalization and Stimulus Control are indeed phases within DTT. Generalization refers to the transfer of learned behaviors to new, but similar, situations. Stimulus Control is developed when a behavior is emitted more frequently in the presence of a specific antecedent stimulus because it has been reinforced in the past in the presence of that stimulus.