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- Average length at birth: 20 inches for boys, and 19 3/4 inches for girls (physical)
- Newborns sleep typically around 16 hours a day (physical/growth & development)
- As the nervous system begins to mature, many reflexes will mature from involuntary to voluntary reflexes, such as the root reflex. This is a reflex in which when a baby's mouth is touched, then the baby will turn its' head and will open his/her mouth in order to follow the "root" in the direction of the stroking. This technique is often used when wanting the baby to find the breast or bottle (neurological).

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- The baby will begin to smile at people (social/emotional)
- Are able to turn their head towards various sounds (communication)
- They are able to follow things with their eyes and are able to recognize people from a distance (neurological)
- They are also able to hold their head up and begin to push up when lying on their stomach (physical)

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- Babies will copy some movements and facial expressions, like smiling or frowning (social/emotional)
- They will cry in different ways to show hunger, pain, or if they feel tired (communication)
- They will use hands and eyes together, such as seeing a toy and then reaching for it (neurological)
- When lying on their stomach, they are able to push up onto their elbows (physical)

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- Babies at this age will often respond to other people's emotions and often seems happy (social)
- They will make sounds to show joy and displeasure (communication)
- Babies will show curiosity about certain things/objects that are out of reach (neurological)
- Babies will begin to sit without support (physical)

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- Height: average growth of about 1/2 inch each month
- Can respond to changes in emotions of others (social)
- Should be able to make several different vowel sounds, especially the "o" and "u" sounds (communication)
- They can roll over easily from front to back and back to front (physical)
- Are able to understand object permanence and can uncover a toy after seeing it covered (neurological)

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- Height: average growth of just over 1/2 inch each month with most infants growing 10 inches in the first year
- Will begin to learn how to wave "bye-bye" (social)
- Are able to make a simple gesture, such as shaking their head "yes" or "no" (communication)
- They will be able to pull up to a standing position (physical)
- They are able to follow a one step command with the parent having to show the child how to do it (neurological)

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- They will start to develop having certain favorite things and people (social)
- Are able to say "mama" and "dada", as well as exclamations like "uh-oh!" (communication)
- They are able to follow simple directions like "pick up the toy" (neurological)
- May take a few steps without holding onto an object (physical)

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- Age 2: Begin to sort shapes and colors (neurological), and will begin to run (physical)
- Age 3: They are able to work toys with buttons, levers, and moving parts (neurological), and will be able to run easily (physical)
- Age 4: Are able to name colors and some numbers (neurological), and will be able to pour, cuts with supervision, and mashes own food (physical)
- Age 5: Are able to count 10 more things (neurological), and is able to stand on one foot for 10 seconds or longer (physical)

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Ages 6-7: They tend enjoy many activities and will stay busy at this age (neurological and physical), and is able to ride a bike (physical)
Ages 8-9: They begin to develop critical and abstract thinking skills (neurological), and are able to jump, skip, and chase (physical)

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- Interpretative ability developed during the years of early adolescence, as does the ability to recognize cause and affect sequences (neurological), and they have developed increased coordination and strength (physical)
- Girls will typically begin to show signs of puberty during this period

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- Most teens are developing the ability to think abstractly, deal with several concepts at the same time, and imagine the future consequences of their actions. This type of thinking in a logical sequence continues to develop into adulthood (neurological), and many (especially boys) will go through the process of puberty during this time (physical)

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- Their capacity for abstract throughout becomes established; can think abstractly and hypothetically; can discern the underlying principles and apply them to new situations; and can think about the future considering many possibilities and logical outcomes of possible events (neurological),and most physical development is complete, yet young men may continue to physically grow until age 21 (physical)

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- Full maturity is reached at this age, in which both the body and mind (brain) have completed development

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- In this age both men and women will begin to lose bone mass after they reach their peak bone density, and the thicker your bones are (at about age 30), the longer it will take to develop low bone density or osteoporosis

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- Many women in this age range are likely to experience menopause at this time, but the range may even extend to 30-60 years dependent on the nutrition lifestyle, culture, and genetics of a person (nobody is the same)

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- A this time, many will begin to lose their strength, balance, and endurance, which are already beginning to wane. This can worsen faster or slower dependent on exercise, and other surrounding factors that may impact this change