Evaluating Three Methods of Stimulus Rotation when Teaching Receptive Labels

Leaf and team compared three ways to rotate picture cards when teaching receptive labels to preschoolers with autism.

One method switched cards every trial (counterbalanced). One kept the same order (fixed). One let the therapist decide (clinician's choice).

They used an alternating-treatments design so each child got all three methods in the same session.

All three rotation styles worked. Kids learned the labels, kept them later, and used them with new pictures.

No single method came out on top. Rigid counterbalancing gave no extra boost over fixed or therapist-choice rotation.

Waite et al. (1972) showed that stimulus clarity matters. They taught prepositions with clearly different objects before mixing similar ones. Leaf et al. (2018) adds that once stimuli are clear, rotation style is less important.

Allison et al. (2012) used the same alternating-treatments design with preschoolers with autism. They compared reinforcement schedules for feeding; Leaf used it to compare rotation methods for receptive labels. Same tool, new question.

Tracey et al. (1974) got generalized receptive prepositions with simple prompting. Leaf shows you can get generalization even when you relax rotation rules. Together, the papers say: focus on clear stimuli and good teaching, not rigid rotation.

You can stop shuffling cards like a Vegas dealer. Pick a rotation that feels natural—fixed order or therapist choice—and spend your energy on clear prompts and quick reinforcement. This frees you to watch the learner, not the card stack.