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  2. Child development stages - Wikipedia

    en.wikipedia.org/wiki/Child_development_stages

    Physical development. Typically grows at a similar rate to the previous month, usually growing between 1 and 1.5 inches (2.5 and 3.8 cm) and gaining about 2 pounds (910 g). [23] Resting heart rate is usually between 80 and 160 beats per minute, and it typically stays within that range until the infant is about one year old. [18] Motor development

  3. Child development - Wikipedia

    en.wikipedia.org/wiki/Child_development

    A study of 18-month-olds whose mothers had depressive symptoms while the children were 6 weeks and/or 6 months old found that maternal depression had no effect on the child's cognitive development. Furthermore, the study indicates that maternal depression combined with a poor home environment is more likely to have an effect on cognitive ...

  4. Early childhood development - Wikipedia

    en.wikipedia.org/wiki/Early_Childhood_Development

    Early childhood development. Early childhood development is the period of rapid physical, psychological and social growth and change that begins before birth and extends into early childhood. [1] While early childhood is not well defined, one source asserts that the early years begin in utero and last until 3 years of age. [1]

  5. Tanner scale - Wikipedia

    en.wikipedia.org/wiki/Tanner_scale

    Purpose. Defines physical measurements of development. The Tanner scale (also known as the Tanner stages or sexual maturity rating (SMR)) is a scale of physical development as pre-pubescent children transition into adolescence, and then adulthood. The scale defines physical measurements of development based on external primary and secondary sex ...

  6. Infant cognitive development - Wikipedia

    en.wikipedia.org/wiki/Infant_cognitive_development

    Infant cognitive development is the first stage of human cognitive development, in the youngest children. 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 ...

  7. Toddler - Wikipedia

    en.wikipedia.org/wiki/Toddler

    Human growthand development. 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]

  8. Development of the human body - Wikipedia

    en.wikipedia.org/wiki/Development_of_the_human_body

    Human growthand development. Development of the human body is the process of growth to maturity. The process begins with fertilization, where an egg released from the ovary of a female is penetrated by a sperm cell from a male. The resulting zygote develops through mitosis and cell differentiation, and the resulting embryo then implants in the ...

  9. 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] This measure consists of a series of developmental play tasks and takes ...