CDC Age-Appropriate Developmental Milestones
Center for Disease Control (CDC)
Challenge-response authentication process
Cognitive development
APA concrete operational stage
APA formal operational stage
APA preoperational stage
APA sensorimotor stage
CDC concrete operational stages
CDC preoperational stage
CDC sensorimotor stages
Medline concrete operational stage
Medline formal operational stage
Medline preoperational stage
Medline sensorimotor stage
Commonwealth Scientific and Industrial Research Organization of Australian (CSIRO)
Completely Automated Public Turing test
Concrete operational stage