Lecture 2 Flashcards
General Research Objectives
- Evolution of measurement tools 2. Descriptive (characterizing clinical disorders) 3. Exploratory (investigating relationships) 4. Comparative (Cause-effect relationships)
Research Hypothesis
Or Ha (alternative) is what researchers expect the results to be.
Null Hypothesis
Assumes nothing has happened, no relationship exists, or no change has occurred
Premise
A statement that states your reasons
Conclusion
Is a statement for which you are giving reasons
Types of arguments
By example (or counter-example), by authority (sources), by analogy, by deduction
Syllogistic Logic
Deductive reasoning based on 2 or more propositions that are asserted or assumed to be true.
Modus Ponens
Affirming the antecedent. A exists therefore B exists yet B exists therefore A exists is false.
Modus Tollens
Denying the consequent. B doesn’t exist therefore A doesn’t either yet A doesn’t exist therefore B doesn’t is false.
Arguments by induction
Attempts to generalize a conclusion to the universe based on a restricted set of observations (Specific –> General), used independently of empirical research, unlikely to generate new knowledge
The principle of Falsifiability
Logically impossible to prove something is true, due to the fact one may find subsequent counter-examples
Confirmation Bias
Untrained thinkers tend to seek evidence that confirms what they Believe to be true.
PICO: Forming a question
Patient, Intervention, Comparison, Outcome