Sample First versus Comparison First Stimulus Presentations: Preliminary Findings for Two Individuals with Autism

Area of Science:

• Behavior Analysis
• Learning Sciences
• Psychology

Background:

• Auditory-visual discrimination is crucial for learning.
• Previous research by Petursdottir and Aguilar (2016) explored stimulus presentation orders.
• Replication is vital for scientific validation.

Purpose of the Study:

• To replicate Petursdottir and Aguilar's (2016) study on stimulus presentation in discrimination training.
• To compare the efficacy of sample-first versus comparison-first procedures.
• To investigate differences in learning speed based on stimulus presentation order.

Main Methods:

• Replication of Petursdottir and Aguilar (2016) study.
• Two stimulus presentation procedures: sample-first and comparison-first.
• Auditory-visual discrimination training was employed.

Main Results:

• Both participants demonstrated faster learning in the comparison-first condition.
• The findings diverged from the original Petursdottir and Aguilar (2016) study.
• The comparison-first procedure appeared more efficient for learning.

Conclusions:

• The stimulus presentation order significantly impacts learning speed in auditory-visual discrimination.
• Comparison-first procedures may enhance learning efficiency.
• Further research is needed to understand these discrepancies.