Longitudinal research designs.

1. Compare cross-sectional and longitudinal research designs. What are the advantages and disadvantages of each? Give an example of each. What design has emerged that is based on the advantages of these designs?
2. Compare and contrast any two theories discussed in Chapter 2.
3. Why are males more likely to suffer from sex-linked recessive disorders? How can a female have the disorder?
4. Describe the three periods of prenatal development. Why is the second stage the most dangerous for the developing child?
5. Discuss the kinds of low birth weight that affect a baby. What are the short and long-term consequences?

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