What are the developmental motor milestones?
keeping head erect - 6 weeks rolling over, 2-3 months sitting along, 6-7 months crawling, 7-8 months standing with support, 7-8 months standing alone, 11 months first step and walking alone, 11-13 months walking up steps, 16 months
Rates of motor development are similar between boys and girls.
Toilet training is not recommended to begin before what age?
24 months
When do children enter a new stage of biological development that involves learning motor sequencing behaviors more smoothly/accurately?
motor development progresses rapidly in preschool- especially gross motor skills like jumping/running.
motor sequencing behaviors become more smooth and fluent around 6-7 years old- when athletic prowess starts to become more apparent too.
At birth, the brain is _____ % of its adult size.
25% to 33%
By age two the brain is about what % of its adult size?
75%
By age 5 the brain is _____% of its adult size
90%
T/F: At birth, the infant’s brain contains the majority of neurons it will ever have.
True
How does brain development occur in the infant/young child?
If the dominant hemisphere is damaged how is language function impacted? Does it depend on age?
If before age 7 or 8, plasticity - children can recover language function if dominant hemisphere is damaged
if after age 7 or 8- progress is limited
this is b/c by 7/8 y.o. considerable sensory integration has occurred, and brain has lateralized functioning at that point. b/c of this, there is a more firmly established pattern of handedness and, footedness.
By age 7 or 8 there is also increasingly mature performance on tests of visual-motor and neuroperceptual skills.
Children who are brought up unilingually have difficulty learning to speak an unaccented second language by which age?
10 y.o.
Does brain development continue beyond childhood? If so, how?
Yes to some extent.
Example: Mylenation- continues into a person’s twenties, enhancing processing speed, attention span, and frontal lobe functioning
Describe puberty in boys and girls
Both- growth hormones and gonadal hormones initiate and sustain a growth spurt that causes dramatic increases in height, weight, and the skeletal system.
Girls- occurs between 10-12 years of age, includes menarche (first menstrual period)
Boys- occurs between 12 and 14 years of age, includes spermarche (first ejaculation)
Both- development of secondary sexual characteristics develop.
Early physical maturation has different effects for boys and girls in the US. Describe.
Boys who physically mature early
Girls who physically mature early:
Some researchers have found that by 12th grade, differences between early and late maturers have disappeared for both boys and girls.
Describe menopause
What does the term “male climacteric” describe?
What is primary aging?
What is secondary aging?
T/F: THe sex drive diminishes with age
False.
Sex drive does NOT diminish with age.
- likelihood of sexual activity in the later years is closely related to frequency of sexual activity during younger years.
- men who have been sexually active can generally engage in some sort of sexual activity well into their 70/80s
- women are physiologically able to be sexually active as long as they live.
What is the main barrier to sexual activity for women in older age?
lack of an available partner
Health Belief Model
What is the social buffer hypothesis?
What is the Holmes and Rahe Social Readjustment Rating Scale, and when was it developed?
1967
What are the main stages of language development?
Crying
Cooing (between 6 weeks and 3 months)
Babbling (6-10 months)
Word Comprehension (by about 9-10 months- understand words like “no” or their own name)
Echolalia (at about 9-10 months)
Holophrasic speech (typically 12-18 months)- use a single word or syllable to express a complete thought
Telegraphic Speech (between 18-24 months) - put two words together to express an idea
At what age do children lose the ability to differentiate sounds that are not part of the language they hear spoken?
Infants lose this abliity around 9 to 10 months of age, corresponding to when they are developing echolalia