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.
Brains of Young Adults Not Fully Mature. At an age when Americans are first considered adults, their brains are still maturing, a new study suggests. Researchers at Dartmouth College scanned the brains of nineteen 18-year-old students who had moved more than 100 miles to attend school.