Four-month-old infants extract ordinal information in number-based and size-based visual sequences, provided that magnitude changes involve increasing relations. Here the ontogenetic origins of ordinal processing were investigated between 2018 and 2022 by testing newborns' discrimination of reversal in numerosity (Experiment 1, N = 22 White, 11…

This study investigates the ability of 6-month-old infants to attend to the continuous properties of a set of discrete entities. Infants were habituated to dot arrays that were constant in cumulative surface area yet varied in number for small (less than 4) or large (greater than 3) sets. Results revealed that infants detected a 4-fold (but not…

This study used a learning-set task to assess the ability of four 10-month-old infants to acquire an object discrimination. (Author/JMB)

To determine why the familiarization-novelty paradigm tends to underestimate the ability of infants under 4 months of age to detect unidimensional differences between stimuli, groups of 14- and 20-week-olds were given unidimensional discrimination problems of varying difficulty under conditions of brief and prolonged familiarization. (Author/JMB)

Forty-eight four-month-old infants were tested in a habituation-dishabituation discrimination paradigm using vertically symmetrical, horizontally symmetrical, and asymetrical forms. Results suggest that babies respond to "goodness of organization" rather than to details unique to particular symmetrical patterns. (Author/RH)

An infant control habituation-recovery procedure was used to study 3-month-old infants' discrimination of sad, happy, and surprise facial expressions. (Author/JMB)

Examines discrimination of geometric shapes by three-month-old infants who were presented with geometric stimuli moving laterally at two different velocities. Finds that subjects discriminate between geometric forms at velocities that, according to previous findings, might interfere with shape discrimination. Discusses the possible interactive…

Recognition memory, defined by novelty preferences, was found to vary over 4 discrimination tasks as a function of length of familiarization for 5-6-month-old infants. (ST)

This study is an initial investigation of the effects of a fading procedure upon acquisition and transfer of discrimination learning with children younger than 36 months of age. (CS)

The role of memory factors in the vowel discrimination of normal and at-risk 8-week-old infants was examined by studying the categorical versus continuous discrimination of very brief vowels in a nonnutritive sucking paradigm. Discrimination of the silent delay interval between the last familiar and the first novel stimulus was also examined.…

A series of five experiments explore the 7-month-old infant's ability to discriminate among photos of faces. The infant's tendency to choose visual targets for inspection provides evidence of discrimination and recognition. (Author/JH)

Examined seven-month-old infants' perceptions of happy and fearful facial expressions. Infants could generalize discrimination of expressions across male and female faces if first familiarized with happy faces. Infants tended to look longer at fear faces than at happy faces. Preferential responding was not specific to any individual face.…

Three experiments investigated seven-month-old infants' ability to discriminate the facial expressions of happiness and fear. (CM)

Studied head-orientation response of breast-feeding neonates in paired-choice odor tests. Found that 2-day olds detected amniotic fluid and colostrum, treating them as similar sensorily and/or hedonically. Four-day olds exhibited a preference for breast milk. Three-day olds oriented longer toward the odor of their own amniotic fluid than alien…

This study examined the equivalence of objects and pictures of objects in transfer discrimination of 72 children (ages 24-45 months). (BRT)