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  2. Infant visual development - Wikipedia

    en.wikipedia.org/wiki/Infant_visual_development

    In regards to pupil dimensions, newborns' pupils grow from approximately 2.2 mm to an adult length of 3.3 mm. [2] A one-month-old infant can detect a light threshold only when it is approximately 50 times greater than that of an adult. By two months, the threshold decreases measurably to about ten times greater than that of an adult.

  3. Bayley Scales of Infant Development - Wikipedia

    en.wikipedia.org/wiki/Bayley_Scales_of_Infant...

    The Bayley Scales of Infant and Toddler Development (version 4 was released September 2019) is a standard series of measurements originally developed by psychologist Nancy Bayley used primarily to assess the development of infants and toddlers, ages 1–42 months. [1]

  4. Infant cognitive development - Wikipedia

    en.wikipedia.org/wiki/Infant_cognitive_development

    The first stage, with up to two items in the focal point, lasts up to about six months of age. [17] [18] The second stage, with up to three items, begins after eight months. [17] [19] The third stage appears at about 3.5 years of age with four items. [17] [20]

  5. Child development stages - Wikipedia

    en.wikipedia.org/wiki/Child_development_stages

    By this age, infants may have doubled their birth weights. They typically grow about 0.8 inches (2.0 cm) and gain about 1 to 1.5 pounds (450 to 680 g) during this month. [28] Fat rolls ("Baby Fat") begin to appear on thighs, upper arms and neck. Motor development. May be able to roll from front to back. [29] Starts to reach and grasp for ...

  6. Toddler - Wikipedia

    en.wikipedia.org/wiki/Toddler

    A toddler is a child approximately 1 to 3 years old, though definitions vary. [1] [2] [3] The toddler years are a time of great cognitive, emotional and social development. The word is derived from "to toddle", which means to walk unsteadily, like a child of this age. [4]

  7. T. Berry Brazelton - Wikipedia

    en.wikipedia.org/wiki/T._Berry_Brazelton

    The examiner shares this portrait with parents to develop appropriate caregiving strategies aimed at enhancing the earliest relationship between babies and parents. It evaluates a wide range of 38 behaviors to build a behavioral profile of an infant up to 2 months old. The Scale contains 28 behavioral and 18 reflex items.

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    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Visual cliff - Wikipedia

    en.wikipedia.org/wiki/Visual_cliff

    Another criticism has to do with the experience of the infant. Infants who learned to crawl before 6.5 months of age had crossed the glass, but the ones that learned to crawl after 6.5 months of age avoided crossing the glass. This helps support the hypothesis that experience does influence avoidance of the glass, rather than just being innate ...