Psychology 1000 Chapter Notes - Chapter 12: Visual Acuity, Teddy Bear, Prenatal Development

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Dr.Mike

Document Summary

Comparing people of different ages at the same point in time. Advantage: data from many age groups can be collected relatively quickly. Disadvantage: different ages groups (e. g. , cohort) grew up in different historical periods. Repeatedly tests the same cohort as it grows older. Disadvantages: time-consuming; sample may shrink as people move, drop out, or die. The researcher can repeatedly test several age cohorts as they grow older and determine whether they follow a similar developmental pattern. Fist 2 weeks of development, beginning when one sperm fertilizes a female egg (ovum) End of 2nd week 8th week after conception. Contains membranes that allow nutrients to pass from the mother"s blood to the umbilical cord. Contains blood vessels that carry these nutrients and oxygen to the embryo, and waste products back from the embryo to the mother. Muscles become stronger and other bodily systems continue to develop.