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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]
The academic field of infant cognitive development studies of how psychological processes involved in thinking and knowing develop in young children. [1] Information is acquired in a number of ways including through sight, sound, touch, taste, smell and language, all of which require processing by our cognitive system. [ 2 ]
The vision of infants under one month of age ranges from 6/240 to 6/60 (20/800 to 20/200). [4] By two months, visual acuity improves to 6/45 (20/150). By four months, acuity improves by a factor of 2 – calculated to be 6/18 (20/60) vision. As the infant grows, the acuity reaches the healthy adult standard of 6/6 (20/20) at six months. [5]
Sensodyne is a brand of toothpaste that was first sold by Block Drug, a Brooklyn, New York-based company established in 1907 by pharmacist Alexander Block. [1] By 1925, manufacturing dental care products had become the company's focus. Leonard N. Block followed his father into the family business which relocated to Jersey City, New Jersey, in 1938.
Sensodyne: a brand of toothpaste by Haleon, marketed for people with sensitive teeth [39] and/or dentine hypersensitivity. Signal: marketed by Unilever. [40] Sozodont: [41] a popular brand of oral hygiene product from the mid-nineteenth century to the early twentieth century.
From birth to 1 month, babies produce mainly pleasure sounds, cries for assistance, and responses to the human voice. [14] Around 2 months, babies can distinguish between different speech sounds, and can make "goo"ing sounds. [14] Around 3 months, babies begin making elongated vowel sounds "oooo" "aaaa", and will respond vocally to speech of ...
The symmetrical tonic neck reflex (STNR) is a primitive reflex that normally emerges during the first month of an infant's life and is diminished by the age of 9–10 months. [1] It is a bridging or transitional brainstem reflex that is an important developmental stage and is necessary for a baby to transition from lying on the floor to ...
Baby sign language is the use of manual signing allowing infants and toddlers to communicate emotions, desires, and objects prior to spoken language development. [ 1 ] [ 2 ] With guidance and encouragement, signing develops from a natural stage in infant development known as gesture . [ 3 ]