INTRODUCTION. Scientific Method – What are the steps? 1. Pose a question (the problem) 2. Develop...
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INTRODUCTION
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Scientific Method – What are the steps?
• 1. Pose a question (the problem)• 2. Develop a hypothesis
• A testable prediction
• 3. Test the hypothesis • Gather data
• 4. Draw conclusions• State the results of the research
• 5. Report the results• Publish the findings
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Replicate the study – Why should we do it?
• Repeat the study with different participants• Confirm earlier results
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Nature-Nurture debate• Nature = Genes• Nurture = Environment
• Family• Culture• Etc.
• Size can be a result of biology (genetics) and the environment.
• Fish in a pond• Plants in soil
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Do you remember?• What are the steps in the scientific method?• Why would someone replicate a study?• What part of your nature influenced your development?• What part of your nurture influenced your development?
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Life-Span Perspectives• Multidirectional• Multicontextual• Multicultural• Multidisciplinary• Plastic
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What is a multidirectional approach?
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What is a multicontextual approach?• Historical Cohort
• Cohort• People experiencing same historical perspective
• E.g. “Baby boomers”
• Values• Events• Technologies• Culture
• Socioeconomic Cohort• Social class• Occupation• Education
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What is a multicultural approach?• People experience a culture differently based on their
previous cultural experiences• Patterns of behavior
• Norms• Customs• Values
• Ethnicity• Race
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What is a multidisciplinary approach?• Biosocial
• Biological
• Cognitive• Thought
• Psychosocial• Psychological
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What is plasticity?• Traits can be molded during development
• Culture• Genes
• Provides hope and ability to change
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Do you remember?• What are the different lifespan perspectives?• What directions are involved in the multidirectional
approach?• Which of these perspectives holds the most hope that
human traits can be molded during development?
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How can we use the Scientific Method? (Types of studies)• Observational• Surveys• Experiments• Studies over time
• Cross-sectional• Longitudinal
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What are observational studies?• Natural setting• Laboratory • Archival data
• Files
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What are surveys?• Questionnaires
• Interviews
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How can we study change over time? • Cross-sectional
• Different groups of different ages
• Longitudinal• Same group over time as they age
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Do you remember?• If you are watching children at play on the playground to
see how they respond, you are using what type of study?• If you talk to parents about their child’s behavior, you are
using what type of study?• In one year, if you study children in the 1st. 2nd.,3rd., and
4th. grades to see how children change over time, you are using what type of study?
• If you follow the same group of children from the first grade through the fifth grade, you are using what type of study?
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What are experiments?• Can experiments determine cause and effect?
• Yes (The only type of study that can)
• Two groups• Experimental group• Comparison (control) group
• Variables• Independent variable• Dependent variable
• E.g. Classroom vs. distance learning
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Correlation• If two things are correlated, did one cause the other?
• No – Correlation is not causation• Correlation may be caused by a 3rd. Variable
• Correlation• Positive, Negative, or Zero
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Quantitative vs. Qualitative• Quantitative – Numbers• Qualitative – Written descriptions, ideas
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Do you remember?• What scientific method can determine if one thing caused
another?• What are the two groups in an experiment, and what are
the differences in these groups?• What would be an example of the different types of
correlation?• If two things are related (correlated) why can you not
assume one caused the other?
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