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Cantrell, Lisa; Boyer, Ty W.; Cordes, Sara; Smith, Linda B. – Developmental Science, 2015
Infants have shown variable success in quantity comparison tasks, with infants of a given age sometimes successfully discriminating numerical differences at a 2:3 ratio but requiring 1:2 and even 1:4 ratios of change at other times. The current explanations for these variable results include the two-systems proposal--a theoretical framework that…
Descriptors: Infants, Child Development, Discrimination Learning, Task Analysis
Thothathiri, Malathi; Snedeker, Jesse; Hannon, Erin – Infant and Child Development, 2012
Distributional information is a potential cue for learning syntactic categories. Recent studies demonstrate a developmental trajectory in the level of abstraction of distributional learning in young infants. Here we investigate the effect of prosody on infants' learning of adjacent relations between words. Twelve- to thirteen-month-old infants…
Descriptors: Infants, Suprasegmentals, Language Acquisition, Sentences
Santi, Angelo; Van Rooyen, Patrick – Learning and Motivation, 2007
Two groups of rats were trained in a symbolic delayed matching-to-sample task with a 0-s delay to discriminate sample stimuli that consisted of sequences of tone bursts. For one group, sequences varied in number with total sequence duration controlled. For the other group, total sequence duration, sum of the tone durations, and sum of the gap…
Descriptors: Cues, Intervals, Figurative Language, Diagnostic Tests

Mareschal, Denis; Powell, Daisy; Volein, Agnes – Journal of Experimental Child Psychology, 2003
Examined 7- and 9-month-olds' ability to categorize cats and dogs as separate from one another. Found that both groups formed a cat category that included novel cats but excluded a dog and an eagle, and formed a dog category that included novel dogs and a novel cat but excluded an eagle. Results mirrored those of 3- to 4-month-olds with visual…
Descriptors: Age Differences, Classification, Cognitive Development, Discrimination Learning
Object Recognition and Attention to Object Components by Preschool Children and 4-Month-Old Infants.

Haaf, Robert A. – Journal of Experimental Child Psychology, 2003
This study investigated attention to and recognition of components in compound stimuli among infants and preschoolers. Oddity tasks with preschoolers and familiarization/novelty-preference tasks with infants demonstrated successful discrimination among stimuli components on basis of edge property information. Matching tasks with preschoolers and…
Descriptors: Age Differences, Attention, Attention Control, Discrimination Learning