How and why ppl change over time.

3 types of develpment:

1)Biosocial-Includes growth & change that occurs in body (DNA)

2)Cognitive-Mental processes

3)Psychosocial-Emotions

Scientific Method steps

1. Curiosity-Before research
2. Develop a Hypothhesis-Make a prediction
3. Test the Hypothesis-Conduct research
4. Conclusion-Validate Hypothesis
5. Report results-Share the data 

1. Multidirectional
2. multicontextual
3. multicultural
4. multidisciplinary
5. plastic 

Deal with gains and losses

• Gains

Child birth

• Losses

loss of eye sight

Height loss 

multicontextual

• historical context

Cohort is the grouping of ppl by the age. (baby boom generation)

• Socialeconomic context

Social class (middle-class, upper-class, working-class)