IDENTIFICATION OF A RESEARCH PROBLEM
SELECTION OF A RESEARCH PROBLEM
1. Select a research topic
2. State the research problem from information gathered pertaining to the selected topic
The research problem should:
! be of interest to the researcher AND at least some segment of the educational
community
! ensure some degree of originality (or extension of existing knowledge)
! have theoretical and/or practical educational significance
! add to existing knowledge in a meaningful way
! be researchable, feasible, and ethical
Sources for research problems/topics:
! research interest of professor/mentor
! discussion with other graduate students
! researcher's professional experience & interests
! current issues in education or social sciences
! research & professional literature
The problem statement must provide adequate focus and direction for the research. It should also identify key variables of the study and suggest the appropriate methodology for the study.
CONSTANTS, VARIABLES, AND MEASUREMENT SCALES
Constant - a characteristic or condition that is the same for all individuals in a study.
Variable - a characteristic that takes on different values/conditions for different individuals.
Types of Variables
Independent Variable - a variable that affects the dependent variable under study and is included in the research design so that its effects can be determined. (Also known as a predictor variable in certain types of research.)
Levels of the Variable - describes how many different values or categories an independent has in a research design.
Dependent Variable - a variable being affected or assumed to be affected by an independent variable. (Variable used to measure the effects of independent variables. Also known as an outcome variable in certain types of research.)
Organismic Variable - a preexisting characteristic of an individual that cannot be randomly assigned to that individual (e.g. gender). Serve as control variables only when effects are known/predetermined.
Control Variable - an independent variable not of primary interest whose effects are determined by the researcher. (May be included in the research design to help explain variation in results.)
HYPOTHESES AND THE PROBLEM STATEMENT
Research problem statement - by itself provides general direction for the study--it does not include all the specific information.
Hypothesis - a conjecture or proposition about the solution to a problem, the relationship of two/more variables, or the nature of some phenomenon (i.e. an educated guess based on available fact).
A good hypothesis should:
1. state an expected relationship between two or more variables
2. be based on either theory or evidence (and worthy of testing)
3. be testable
4. be as brief as possible consistent with clarity
5. be stated in declarative form
6. be operational by eliminating ambiguity in the variables or proposed relationships
Types and Forms of Hypotheses
Research Hypothesis - simple declarative statement of the hypothesis guiding the research.
Example: Members of the general population are, on average, less intelligent than UAF students.
Statistical Hypothesis:
(1) a statement of the hypothesis given in statistical terms.
(2) a statement about one or more parameters that are measures of the population under study.
(3) a translation of the research hypothesis into a statistically meaningful relationship.
Example: The mean intelligence of members of the general population is lower than the mean intelligence of UAF students.
Null Hypothesis - a statistical hypothesis stated specifically for testing (which reflects the no difference situation).
Example: There is no significant difference in mean intelligence between members of the general population and USD students.
Alternative Hypothesis - an alternative to the null hypothesis that reflects a significant difference situation.
Example: There is a significant difference in mean intelligence between members of the general population and USD students.
Directional Hypothesis - a hypothesis that implies the direction of results.
Example: The mean intelligence of members of the general population is significantly lower than that of USD students.
Nondirectional Hypothesis - a hypothesis that does not imply the direction of results.
Research Questions - relatively narrow, specific delineations of what the proposed research will address. Questions emerge from the researcher's topic of interest plus information gathered during the literature review.
! Emerge from either theory or evidence (literature review)
! Operationalize the research problem by identifying variables and/or the relationships among variables
! Be answerable
NOTE: While hypotheses generally require Yes-No responses (prove-disprove), research questions often require descriptive or correlational information.
SELECTION OF A RESEARCH PROBLEM
1. Select a research topic
2. State the research problem from information gathered pertaining to the selected topic
The research problem should:
! be of interest to the researcher AND at least some segment of the educational
community
! ensure some degree of originality (or extension of existing knowledge)
! have theoretical and/or practical educational significance
! add to existing knowledge in a meaningful way
! be researchable, feasible, and ethical
Sources for research problems/topics:
! research interest of professor/mentor
! discussion with other graduate students
! researcher's professional experience & interests
! current issues in education or social sciences
! research & professional literature
The problem statement must provide adequate focus and direction for the research. It should also identify key variables of the study and suggest the appropriate methodology for the study.
CONSTANTS, VARIABLES, AND MEASUREMENT SCALES
Constant - a characteristic or condition that is the same for all individuals in a study.
Variable - a characteristic that takes on different values/conditions for different individuals.
Types of Variables
Independent Variable - a variable that affects the dependent variable under study and is included in the research design so that its effects can be determined. (Also known as a predictor variable in certain types of research.)
Levels of the Variable - describes how many different values or categories an independent has in a research design.
Dependent Variable - a variable being affected or assumed to be affected by an independent variable. (Variable used to measure the effects of independent variables. Also known as an outcome variable in certain types of research.)
Organismic Variable - a preexisting characteristic of an individual that cannot be randomly assigned to that individual (e.g. gender). Serve as control variables only when effects are known/predetermined.
Control Variable - an independent variable not of primary interest whose effects are determined by the researcher. (May be included in the research design to help explain variation in results.)
HYPOTHESES AND THE PROBLEM STATEMENT
Research problem statement - by itself provides general direction for the study--it does not include all the specific information.
Hypothesis - a conjecture or proposition about the solution to a problem, the relationship of two/more variables, or the nature of some phenomenon (i.e. an educated guess based on available fact).
A good hypothesis should:
1. state an expected relationship between two or more variables
2. be based on either theory or evidence (and worthy of testing)
3. be testable
4. be as brief as possible consistent with clarity
5. be stated in declarative form
6. be operational by eliminating ambiguity in the variables or proposed relationships
Types and Forms of Hypotheses
Research Hypothesis - simple declarative statement of the hypothesis guiding the research.
Example: Members of the general population are, on average, less intelligent than UAF students.
Statistical Hypothesis:
(1) a statement of the hypothesis given in statistical terms.
(2) a statement about one or more parameters that are measures of the population under study.
(3) a translation of the research hypothesis into a statistically meaningful relationship.
Example: The mean intelligence of members of the general population is lower than the mean intelligence of UAF students.
Null Hypothesis - a statistical hypothesis stated specifically for testing (which reflects the no difference situation).
Example: There is no significant difference in mean intelligence between members of the general population and USD students.
Alternative Hypothesis - an alternative to the null hypothesis that reflects a significant difference situation.
Example: There is a significant difference in mean intelligence between members of the general population and USD students.
Directional Hypothesis - a hypothesis that implies the direction of results.
Example: The mean intelligence of members of the general population is significantly lower than that of USD students.
Nondirectional Hypothesis - a hypothesis that does not imply the direction of results.
Research Questions - relatively narrow, specific delineations of what the proposed research will address. Questions emerge from the researcher's topic of interest plus information gathered during the literature review.
! Emerge from either theory or evidence (literature review)
! Operationalize the research problem by identifying variables and/or the relationships among variables
! Be answerable
NOTE: While hypotheses generally require Yes-No responses (prove-disprove), research questions often require descriptive or correlational information.