Thābit ibn Qurra's Epitome of Galen's Book on Seven-Month Children

Imitation is an important form of learning in early childhood, allowing children to learn new behaviors and participate in social interactions. Children imitate others for different purposes. They may copy adults and peers to learn skills and build social connections. Imitation becomes especially important toward the end of the first year.Early Development of ImitationPiaget observed that infants initially imitate actions they can see themselves perform, such as hand or foot movements. By about...

Physical growth is especially rapid during the first three years of life, with the greatest rate in the first few months after birth. Although children continue to gain height and weight throughout infancy and toddlerhood, the rate of growth gradually slows during the second and third years. At most ages, boys are typically slightly taller and heavier than girls, reflecting a common pattern of early physical development.Changes in Body ProportionsAs infants become toddlers, their body...

To promote clear communication, for instance, about the location of a patient's abdominal pain or a suspicious mass, anatomists and clinicians typically use imaginary lines to categorize the abdominopelvic cavity into either four quadrants or nine regions to identify organs in the cavity.
The simpler quadrants approach, which is more commonly used in medicine, subdivides the cavity with one horizontal and one vertical line that intersects at the patient's umbilicus (navel). The four quadrants...

Gestures are nonverbal movements of the hands, arms, or face that allow infants and toddlers to communicate emotions, needs, and intentions before speech develops. Gesture use generally appears before spoken language and decreases as vocabulary expands. For example, an 11-month-old may raise their arms to request being picked up, whereas an 18-month-old may say “up.”Types of GesturesChildren mainly use deictic and representational gestures. Deictic gestures emerge around six months and include...

At birth, vision is the least developed of the major senses because the visual system is still structurally and neurologically immature. The retinas, optic nerves, and visual regions of the brain continue to mature after birth. As a result, newborns have limited visual acuity, or sharpness and clarity of vision, and respond best to objects viewed at close range, roughly 8 to 12 inches away.Rapid Visual DevelopmentVision improves rapidly during the first few months as infants observe and...

Piaget’s theory describes cognitive development as a sequence of stages. The first is the sensorimotor stage, which extends from birth to approximately two years. During this period, infants gain knowledge mainly through sensory experiences and motor actions. Over time, behavior progresses from automatic reflexes toward increasingly intentional and goal-oriented actions. The first three substages show the early part of this transition.Substage 1: Reflexive SchemesReflexive schemes span the...