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20 Cards in this Set
- Front
- Back
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What are the types of nonexperimental research?
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* Descriptive
* Comparative * Correlational * Predictive * Survey |
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What is the purpose of multiple regression analysis?
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Provides a single index of the predictive power of all the predictor variables together.
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Define Research design.
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The way information is gathered from subjects.
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Identify the advantages and disadvantages of internet based surveys?
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Advantages: reduced cost and time, easy access, quick responses and ease of entering responses into a database.
Disadvantages: Samples ar elimited to those with access to the technology, both hardware and software, which may lead to bias. |
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Describe Expost facto
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Presumed cause the occurred in the past.
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What are the esssential characteristics of all experimental research?
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* Direct manipulation of the independent variable.
*Control of Extraneous variables |
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What are the factors that the generalizability of research results?
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*Subjects
*Situation *Time *Treatments *Measures |
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What are four of the potential threats to the internal validity of an experimental research study?
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*Maturation
*Pretesting *History *Selection |
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Describe a factorial design and give the main purposes for using such a design?
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A factorial design are extentions of the designs that study more than one independent variable or factor, and the interaction between independent variables.
Purposes: 1. see if the effects of a treatment are consistant across characteristics such as, gender, aptitude. 2. to examine interations which are relationships that can only be investigated with factorial designs. |
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In what experimental designs is selection a serious threat to internal validity? Why?
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*Single-group post test only
*Nonequivalent-group postest only |
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Name 3 types of tests.
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1. t-test
2. ANOVA 3. Chi-Square 4. Multivariate |
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What is the effect size?
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is a way of quantifying the degree of difference between two groups.
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What is the difference between Type I and Type II errors?
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Type I-Rejecting the null hypothesis when it is true
Type II-is not rejecting the null hypothesis when it is not true. |
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What does a t-test compare?
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Two means
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The Probability is called
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the level of Significance.
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Name & Describe 3 key characteristics of Qualitative research.
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1. Natural Settings-field research, behavior is studied as it occurs naturally
2. Data Collection-Data is collected directly from the source, such as observations, interviews, document analysis. 3. Rich Narrative Descriptions- detailed narratives that provide in-depth understanding of context behaviors. |
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How does a researcher gather datat in an ethnographic study?
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*Document analysis- written records
*Interviews- unstructured in nature (key informant, life history, focus group) *Observation - participant observer (involved), complete observer (detached), Fieldnots to record obs. (descriptions and reflections) |
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What is the difference between etic and emic data?
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Etic- Researcher/outsider viewpoint of phenonomn
Emic - Participant wording with the cultural group |
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What is an ethnographic study?
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Is an in-depth description and interpretation of cultural patterns and meaning within a cultural or social group.
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Describe 2 types of case studies.
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*Observational - is the primary method of gathering data to study a particluar entity or some aspect of the entity (such as a school or classes within the school)
*Life History- A first person narrative that is completed with on person; also referred to ans an oral history. |
