Acoustic Stimulation 1 Auditory Perception 1 Autism Spectrum Disorder 1 Child, Preschool 1 Discrimination, Psychological 1 Female 1 Humans 1 Male 1 Photic Stimulation 1 Reinforcement, Psychology 1 Visual Perception 1 auditory stimulation 1 auditory-visual conditional discrimination 1 autism 1 autism spectrum disorder 1 differential observing response 1 emergent responding 1 female 1 hearing 1 human 1 identity-match prompt male 1 photostimulation 1 physiology 1 preschool child 1 psychology 1 receptive-expressive transfer 1 vision 1