A class of plasticizing chemicals used to make products more pliable or to make fragrances stick to skin. Phthalates disrupt the endocrine system and may cause birth defects. They have been linked to damage of the kidneys, lungs, and liver, as well.
Psychologists have debated the age of adultsâ earliest memories. To date, estimates have ranged from 2 to 6â8 years of age. Some research show that the offset of childhood amnesia (earliest age of recall) is 2 years of age for hospitalization and sibling birth and 3 years of age for a death or change in houses.
Some age-related development periods and examples of defined intervals are: newborn (ages 0â4 weeks); infant (ages 4 weeks â 1 year); toddler (ages 1â3 years); preschooler (ages 4â6 years); school-aged child (ages 6â13 years); adolescent (ages 13â19).y three years the child begins to use complex sentences, including relative clauses, although still perfecting various linguistic systems. By five years of age the child's use of language is very similar to that of an adult.