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LIS 397.1 Introduction to Research in Library and Information Science Summer, 2003 Randolph G. Bias, Ph.D., CHFP [email protected] cell: 512-657-3924. First. There are two components of this and any class: Instruction and Evaluation. Let’s get the evaluation out of the way, early.

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LIS 397.1Introduction to Research in Library and Information ScienceSummer, 2003Randolph G. Bias, Ph.D., CHFP [email protected]: 512-657-3924

first
First . . .
  • There are two components of this and any class: Instruction and Evaluation.
  • Let’s get the evaluation out of the way, early.
  • Need one volunteer.
research shows
“Research shows . . .”
  • Finger length is a good (and quick!) indicator of intelligence.
  • One volunteer – measure your finger length in cm.
hmmmm
Hmmmm . . .
  • Everyone in the class will get a grade of “C”
  • But still, we can continue with the “instruction” part of the course.
oh so maybe
Oh, so maybe . . .
  • Just THIS person isn’t too smart.
  • OK, everyone measure your right index finger.
  • From the top (last) crease in your hand, to the tip of the finger.
  • Write down the length, in cm.
bettin time
Bettin’ Time!
  • I’ll give everyone one penny.
  • You HAVE to wager it:
    • Turn it heads UP on your desk if you think that two people in this classroom share a birthday, and heads DOWN if you think that no two people share a birthday.
please go to the board
Please go to the board . . .
  • . . . And complete the following columns:
    • Your first name and last initial.
    • Your birth month and day (I don’t care about the year).
    • The length of your finger, in cm.
    • The number of Major League Baseball games you’ve seen, in person.
    • One favorite hobby.
now an experiment
Now, an experiment
  • I will hand you each a slip of paper. Please read it an do NOT let anyone else read it.
    • Women receive a pink slip of paper.
    • Men receive a blue slip of paper.
  • After everyone has read his/her slip of paper and refolded it, I’ll show some letters of the alphabet, one at a time, for one second each.
  • After the last one, I’ll say “Go,” and ask you to write down the letters, in order.
  • Any questions?
ok pencils down
OK, pencils down!

J

F

M

A

M

J

J

A

S

O

N

D

answers
Answers

J

F

M

A

M

J

J

A

S

O

N

D

who among you
Who among you . . .
  • . . . is a statistical wizard?
  • . . . has experience conducting research?
many ways to learn new things
Many ways to learn new things
  • Method of Authority
    • trusted authority tells you something
  • Method of Reason
    • follow basic logical laws from philosophy
  • Modeling
  • Trial-and-error
  • Intuition
  • Scientific Method
    • belief on the basis of experience
after this class
After this class . . .
  • You’ll know something about how scientists (information scientists) gather new information.
  • AND you’ll be good at evaluating information others offer you.
three paths to belief
Three Paths to “Belief”

1 – Naïve acceptance.

2 – Cynicism.

3 – Critical skepticism.

critical skepticism
Critical Skepticism!
  • Rabbit pie story.
what you ll learn
What you’ll learn:
  • Validity. (Finger length a good indicator of intelligence?)
  • Reliability. (“Oh, just measure it however.”)
  • Sampling – picking a representative sample and then generalizing to a larger population
  • Why larger samples are better
what you ll learn cont d
What you’ll learn (cont’d.):
  • How to represent a group of numbers, meaningfully.
    • Frequency distributions
    • Measures of central tendency
    • Measures of dispersion (spread)
    • Graphing data
  • Operationalizing variables (“intelligence”)
  • Probability
  • Correlation
what you ll learn cont d1
What you’ll learn (cont’d.):
  • Different measurement scales
  • What makes a good research question?
  • Experimental design
    • Independent and dependent variables
    • Controls, counterbalancing, and confounds
    • Hypothesis testing
    • Inferential statistics (is THAT number really bigger than THIS number?)
professional history
Professional History
  • B.S. in psych from FSU
  • Ph.D. in cognitive psych from UT-Austin
  • Bell Labs for 3 years
  • IBM-Austin for 11 years
  • BMC Software for 5 years
  • Co-founded Austin Usability 3 years ago
  • Previously adjunct faculty member at UT; Have taught at UT, Rutgers, Huston-Tillotson, SWTSU
  • Newly an assoc. prof. in the UT School of Information
objectives
Objectives

To arm you with a scientist’s skepticism, and a scientist’s tools to conduct research and evaluate others’ research. The student who successfully completes this course will understand:

1 – descriptive statistics, and how to represent a collection of numbers

2 – how to design a good experiment (and evaluate if someone else has)

3 – inferential statistics and hypothesis testing

4 – other techniques human beings use to gain new information, such as qualitative methods.

homework
Homework
  • Bring in one claim that you hear today or tomorrow. On the news, in your reading, in an ad, wherever.
  • Try to buy books. (Hinton book may not be in yet.)

See you tomorrow.

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