PSYCH 250 Lecture Notes - Lecture 18: Hackney Carriage, Clinton–Lewinsky Scandal, Neuroglia
Document Summary
Chapter 12: physical and cognitive development in middle adulthood. Age range: 40-65: retire around 65. Decline in rates of mental disorders: peak in mid to late twenties. Accommodation ability to focus an image on the retina: declines between 40-59, weakening of muscle, growth in size of the lens. Thickening of lens makes it harder to bend to form accommodation: presbyopia difficulty viewing close objects. Size of the pupil shrinks, the lens yellows: light appears more dim. More hazardous for driving at night: color discrimination. Reduced blood supply reduces visual field, increases blind spot. 14-25% of those between ages 45 and 64 have hearing loss hereditary and age-related declines. Presbycusis starts with a loss of higher frequencies. Men"s hearing declines earlier and faster than women"s: more likely to be around loud noises like construction sites. Becomes more difficult to interact in large crowds with prominent background noise. Middle-age spread: slowed metabolism, increase in body fat.
