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40 Cards in this Set

  • Front
  • Back
Empiricism
- States that knowledge CAN come from sense data
Epistemology
- The study of which beliefs get to count as known to be true
- "What's your epistemology?" is like asking "What's your standard for deciding you know something?"
A big assumption scientists make about the external world is...
The external world that I perceive through my senses is real
This is rejecting solipsism
Knowledge = ______________ + _______________
Belief
Truth
Scientific skepticism involves doubting....
- Sense data & empirical evidence
- Whether patterns in data are real or a mistake
- Theoretical explanations for why we have the patterns
---> However, irrational to go to great extremes of doubt
Scientific epistemology basically is that researchers try to build comprehensive knowledge of the interacting biological and behavioral contributions to health through...
RATIONAL interpretation of EMPIRICAL evidence
Society offers a conflicting pile of claimed observations, so scientists weed it down by...
Requiring documentation
People claim all kinds of relationships, so scientists require...
Systematic investigation and consistency
Scientists call it a valid theory if it...
- Unifies all the best quality/comprehensive data
- Has predictive power
---> All else being equal, the simpler the better
Observation with documentation involves...
- Writing down what you saw or talk to a tape record to make a record (Qualitatively)
- Measuring what you're seeing (Quantitatively/Data)
- Explain what you did and how you did it (Qualitatively/META-DATA)
2 Problems with automatic pattern finding
1) Nobody has seen it all
2) Even when we see a representative sample, our brains generate SPURIOUS associations (e.g. primacy effect, confirmation bias) and ignore legitimate associations (neglect of probability)
Formal analysis of pattern finding doesn't involve thinking something co-occurs with something else, but it systematically evaluates:
- Under what conditions
- How strongly
---> In quantitative realm, that's statistics
Make up an explanation and test it (x correlates with y), and then if you want to find out if your explanation is useful, __________________ from your explanation a ______________________
- DEDUCE
- Prediction (Hypothesis)
Deduction
- Deduce a prediction/observation, empirical hypothesis, whole experimental design, etc. from a THEORY
- Abstractions to details
- More about confirming existing ideas
Induction
- Induce a new observation from an observation that happened
- Details to abstractions
- More about exploring the unknown (nothing in mind to make new ideas until you get new data)
Abstract to concrete axis:
1. Theories
2. Laws
2. Hypotheses
3. Experimental Designs
4. Data Patterns
5. Data Points
Investigating causation:
What are the factors in biological determinism?
- Genetic effects (specific parts of DNA)
- Chemical exposure effects (changing cell functions)
- Pathogen effects (actions of viruses/bacteria)
Investigating causation:
What are the factors in cultural/contextual determinism?
- Socioeconomic effects (relationships b/t people and how job/money affects them)
- Intervention effects (who we decide to give money to or health insurance to has an effect on individuals)
Investigating causation:
What are the factors in interactions?
- Biological influences on cultural practices
--> Ex) Genetic predisposition to smoking
- Cultural practices can affect biology
--> Ex) Certain family situations and households have led to children going through puberty earlier
Hard Science
- Clear-cut questions, clear definitions, specific correct answers (yes or no answer you can trust)
Soft Science
- Unclear what is the real question, unclear if what is being measured represents the real thing; there's lots of truth to a whole slew of answers depending on different perspectives
--> Ex) "Will gun violence decrease if we make it harder to buy guns?" led to research about the effects after banning assault weapons, which was not profound (no control group, no extreme certainty whether it helped or not, and unclear [definition of weapon])
Quantitative measurement starts with a concept and definitions of what we're trying to measure/how (the construct), then...
- Create a way to represent variance in the observations along a number line (the scale)
- Devise a system to physically convert observations into specific measurements (data)
Since no measurement is exact or perfect,
Measured Value = ____________ + _____________
True Value + Error
Two types of Error Variance:
1) Consistent Errors
2) Random Errors
Consistent Errors
- Systematic biases
- If identified and measured, they can be removed (calibration)
- Precision
- Ex) Measuring heights and taking off measurements of shoes
Random Errors
- Come from an unknown source or are unpredictable (stochastic)
- Accuracy
- Averages out to true value
In terms of variance,
True Value = ______________ ± _____________ ± ________________
Measurement ± Bias ± Random
Types of Measures:
- Self-Report (very biased)
- Environmental Observations
- Behavioral Observations
- Physiological Observations (to analyze peoples' minds, only way is to ask questions)
- Public Records
Types of Sampling Methods:
- Simple Random
- Systematic
- Stratified
- Cluster
- Convenience Sampling
Type 1 Error:
False Positive
Type 2 Error:
False Negative
Types of parameters (quantitative descriptors of a system or group/numerical summary of a population) are:
- Central tendency (mean, median, mode)
- Spread (range, quartile range, standard of deviation, standard error)
- Distribution shape (skewness, kurtosis)
Common statistical tests for comparing two variables:
- Chi-squared test
- Independent samples T-test
- One-way ANOVA
- Correlation
---> In each instance, the alternative hypothesis is that one variable that helps us predict the other
---> Test selected based on categorical vs. quantitative variables
Statistical tests for association:
---> What are these usually a ratio of?
- Correlation coefficients
- T-scores
- Chi-squared test statistics
- F-ratios
---> Usually a ratio of (difference from expectation)/(variability)
Data Dimensions:
- Subjects
- Variables
- Time
Common Research Designs:
- Case study
- Case-control study
- Cross-sectional study
- Cohort study
- Quasi-expermental study
- Experimental study
Case Study
- Most simple BBH study
- Write up story about person's health with observations
Case-Control Study
- Difference b/t two groups
Cross-Sectional Study
- Population sample at one point in time
Cohort Study
- Study over a period of time