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Chapter Two Tools of Research.

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Presentation on theme: "Chapter Two Tools of Research."— Presentation transcript:

1 Chapter Two Tools of Research

2 Research Tool vs Research
Methodology Research Tool: A specific mechanism or strategy the researcher uses to collect, manipulate, or interpret data. Research Methodology: The general approach the researcher takes in carrying out the research project.

3 The Six General Tools of Research
The library and its resources The computer and its software Measurement techniques Statistics The human mind Language

4 The Library and Its Resources
As a Tool of Research The library of the quiet past The library of the stormy present

5 How to Access Information Quickly and Efficiently
Library Catalogs Indexes and Abstracts Reference Librarian Library Shelves

6 Principle Systems for Classification
of Knowledge Dewey decimal system: Classifies knowledge according to 10 basic areas of human knowledge, each divided decimally. The principle classification system in public libraries and probably the most generally accepted system worldwide. Library of Congress system: Classifies knowledge by alphabetical categories. The principle classification system used in college and university libraries.

7 The Computer and Its Software As a Tool of Research
World Wide Web (WWW) - Web pages - URL (Uniform Resource Locator) - Web browser - Web link Electronic Mail News - list servers

8 Guidelines: Getting Started on E-mail
Get an account on a computer system. 2. Find out how to access the system and obtain the needed software to do so. 3. Find the addresses of people you wish to contact. 4. Connect to the computer system that services your account and send a short message to a friend.

9 Measurement as a Tool of Research
Measurement: limiting the data of any phenomenon—substantial or insubstantial— so that those data may be interpreted and, ultimately, compared to a particular qualitative or quantitative standard. * Substantial measurements = those things being measured that have physical substance. * Insubstantial measurements = exist only as concepts, ideas, opinions, feelings, or other intangible entities.

10 Four Scales of Measurement:
Nominal Ordinal Interval Ratio

11 Nominal Scale of Measurement
Measures data by assigning names to them Things can be measured nominally in an infinite number of ways Simplistic Divides data into discrete categories Statistical procedures = mode, percentage, chi-square test

12 Ordinal Scale of Measurement
Think in terms of symbols (>; <) Allows data to be rank-ordered Statistical procedures = median, percentile rank, Spearman’s rank-order correlation

13 Interval Scale of Measurement
Has equal units of measurement Zero point established arbitrarily Rating scales, such as surveys, assumed to fall on interval scales Statistical procedures = means, standard deviations, Pearson product moment correlations

14 Ratio Scale of Measurement
Characterized by equal measurement units (similar to an interval scale) Has an absolute zero point (0 = total absence of the quality being measured) Can express values in terms of multiples and fractional parts Ratios are true ratios (ex. Yardstick) Relatively rare outside the physical sciences

15 Summary of the Four Scales of Measurement:
Nominal scale: One object is different from another. Ordinal scale: One object is bigger or better or more of anything than another. Interval scale: One object is so many units (degrees, inches) more than another. Ratio scale: One object is so many times as big or bright or tall or heavy as another.

16 Validity and Reliability of Measurement
Validity = the extent to which a measurement instrument measures what it is intended to measure. Reliability = the consistency with which a measurement instrument yields a certain result when the entity being measured hasn’t changed.

17 Statistics as a Tool of Research
Principle Functions of Statistics: 1. describe the data, and 2. draw inferences from the data Descriptive Statistics summarize the general nature of the data obtained. Inferential Statistics help the researcher make decisions about the data.

18 The Human Mind as a Tool of Research
Critical Thinking Deductive Logic Inductive Reasoning The Scientific Method Theory Building

19 Critical Thinking = evaluating
arguments in terms of their accuracy and worth. May take a variety of forms: - verbal reasoning - argument analysis - decision making - critical analysis of prior research

20 Deductive Logic: begins with one
or more premises—statements or assumptions that the researcher initially takes to be true; valuable for generating research hypotheses and testing theories.

21 Inductive Reasoning: begins with an
observation of a specific event to draw conclusions about entire classes of objects or events (i.e., observe a sample and then draw conclusions about the population from which the sample has been taken).

22 The Scientific Method: the means
whereby insight into the unknown is sought by 1. identifying a problem that defines the goal of one’s quest; 2. positing a hypothesis that, if confirmed, resolves the problem; 3. gathering data relevant to the hypothesis; and 4. analyzing and interpreting the data to see whether they support the hypothesis and resolve the research question.

23 Theory Building: is based on
facts rather than naïve beliefs and subjective impressions about the world: - involves thinking actively and intentionally about the phenomena at hand, - yields hypotheses to be tested, - tends to be a slow process, - usually involves collaboration with others.

24 Language as a Tool of Research
Language enables effective thinking. Words enhance thinking by: - reducing the world’s complexity, - allowing abstraction of the environment, - enhancing the power of thought, - facilitating generalization and inference drawing in new situations.

25 Communicating Effectively Through Writing
Say exactly what you mean. Keep your primary objective in mind at all times. Provide an overview of what you will be discussing. Organize ideas into general and more specific categories by using headings and subheadings. Use transitional phrases, sentences, or paragraphs to help readers follow your train of thought.

26 Communicating Effectively Through Writing, continued
Use concrete examples to make abstract ideas more understandable. Use appropriate punctuation. Use figures and tables for clarification. At the end of chapters and major sections, summarize what you’ve said. Anticipate having to write multiple drafts.


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