Quiz 2 Flashcards
(20 cards)
When is the Embryonic stage?
2-8 weeks
Stage when embryo develops 3 layers, which form a different set of structures as development proceeds
Embroyonic
Ectoderm
Skin, hair teeth, sense organs, brain spinal cord
Endoderm
Digestive system, liver, pancrease, respiratory system
Mesoderm
Muscles, bones, blood, circulatory system
How long is Embryo at 8 weeks?
1 inch long
When is the Fetal stage
8 weeks till birth
Stage when differentiation of the major organs has occurred.
Fetal Stage
How rapidly does length of fetus change
20 times
How much does the fetus weight at 4 months?
4 ounces
How much does the fetus weight at 7 months
3 pounds
How heavy is child when it is born
7 1/2 pounds
Goals of Science
Description, Explaining, and Optimization
Accurate record of what was seen or heard
Description
Determine strength of association or causation of 2 variables
Explaining
Application of knowlage gained from research to benefit life
Optimization
Stastical range for correlation design
Pearson Project correlation coeficient
“Strength of association”
Correlational research
“Causation”
Experimental Design
Correlational Studies Research methods
- naturalistic observation - observation of naturally occurring behavior w/out intervention
ethography - used to investigate cultural questions - Case Study-extensive in depth interviews (diaries)
- Survey Research - group of people chosen to represent some larger population asked questions about attitude, behavior or thinking
