Midterm fall of 17 Flashcards
(25 cards)
good research question
- Narrow and specific
- has more than one answer
- posed in a way that can be answered by observable evidence
- Addresses the decision-making needs of agencies or practical problems in social welfare
- clear significance
- feasible to answer
good hypothesis
- be clear and specific
- have more than one possible outcome
- be value free
- testable
bad research question
- broad
- only one answer
- unclear
- difficult to answer
- expensive
three different method of inquiry
- qualitative (open-ended)
- quantitative( stats, numbers,clos ended)
- Mixed (both)
Qualitative research method
Deeper meanings of a particular human experience and generates theoretical richer observations
Quantitative research method
Precise and generalizable statistical findings.
concept
A mental image that symbolizes an idea, an object, an event, a behavior, a person, etc.
attributes
Concepts that make up a broader concept are called attributes, e.g. male/female vs. gender.
Variables
Broader concepts that vary (include more than one attribute or level of a concept) and that researchers investigate, e.g. age, gender, level of self-esteem, number of abusive incidents, etc.
relationship
Variables that change together in a consistent, predictable fashion, e.g., height and weight
Hypothesis
Tentative and testable statement about a presumed relationship between variables
Independent Variable
The variable in a hypothesis that is postulated to explain or cause another variable
Dependent Variable
The variable in a hypothesis that is thought to be explained or caused by the independent variable
3 type of variable relationships
positive , negative and curvilinear
Moderating Variable
- Can influence the strength and direction of relationships between independent and dependent variables
- Sometimes called control variables
- When controlled for in a study can show that the relationship between the independent and dependent variables is really spurious
positive variable
the variable increases together both go I the same direction
negative variable
one variable goes up and one goes down
curvilinear
at different points different relationships, up-down-up or down-up-down
Mediating Variable
Mechanisms by which independent variables can affect dependent variables
Pros of Quantitative
- Precision
- Generalizability
- Testing hypotheses
Pros of Qualitative
*Deeper understandings
*Describing contexts
*Generating hypotheses
Discovery
Cons of Quantitative
- Deductive
- Larger samples
- Objectivity
- Numbers/statistics
- Less contextual detail
- Close-ended questions
- Less time-consuming
- Easier to replicate
Cons of Qualitative
- Inductive
- Smaller samples
- Subjectivity
- Words/patterns
- Rich descriptions
- Open-ended questions
- More time-consuming
- Harder to replicate
Nominal Level of Measurement
Describes a variable in terms of the number of cases in each category of that variable.
EX: gender, ethnicity, religious affiliation