           
 |
|
|
Quantitative Forum
Faculty coordinator: Dr. Robert MacCallum
Student coordinator: Sonya Sterba
Meetings are held Monday at 12:00 p.m. in
Davie 347
unless otherwise noted.
Links to
past forum schedules:
Scheduled
Meetings for Spring 2006:
- 01/23/06
Title:
Organizational
meeting
- 01/30/06
Title: Measurement
issues in longitudinal research
RJ Wirth
Department of Psychology
UNC - Chapel Hill
- 02/6/06
Title:
Providing
Statistics Education Resources on the Web
Jamie
Ridenhour
Department
of Psychology
UNC - Chapel Hill
- 02/13/06
Title:
Using Item
Response Theory to Disentangle Constructs at Different Levels of
Generality
Dr. Dave Thissen
Department
of Psychology
UNC - Chapel Hill
- 02/17/06
Departmental
Colloquium (3:30PM
Davie 112)
Recipient of Psychology Department
Distinguished Alumni Award
Dr. Scott Maxwell
Department of Psychology
University of Notre Dame
- 02/20/06
Title:
Expectations
of a Summer Internship: An Algorithm for Maximizing Opportunity
Michelle
Langer
Department
of Psychology
UNC - Chapel Hill
- 02/27/06
Title:
Take that,
you Lousy Dimension: A Discussion of Time-Series Cross-Sectional
Latent Variable Estimation
Ryan
Bakker
Department
of Political Science
UNC - Chapel Hill
- 03/6/06
Title:
Research
updates
PART One
Second-Order
Latent Growth Models: Challenges Faced with Dichotomous Indicators
RJ Wirth1
PART Two
Comparing
the Fit of the Linear Factor Model and the Graded IRT Model
Li Cai1
PART
Three
Time Varying Covariates:
Disaggregating Between- and Within-Person Effects
Dr. Patrick Curran1
1Department of Psychology
UNC - Chapel Hill
- 03/20/06
Title:
Markov Chain
Monte Carlo Approach to Confirmatory Item Factor Analysis
Dr.
Michael Edwards
Department
of Psychology
Ohio State University
- 03/24/06
Departmental Colloquium (3:30PM
Davie 112)
Title:
Route Choice
in Congested Networks: An Experimental Study of the Braess Paradox
Dr. Amnon Rapoport
Eller College of Management
University of Arizona
- 03/27/06
Title:
Quantitative
Ethics Discussion
Dr. Abigail Panter
Department of Psychology
UNC - Chapel Hill
- 04/3/06
Title:
Approaches to
Computing Standard Errors for Latent Ability Proficiency Estimates
Computed Directly from the Test Characteristic Curve
Dr. Alan Nicewander
Pacific
Metrics Corporation
Abstract
It was surprising to learn that several state testing programs compute
estimates of latent proficiency (θ) by treating the number-correct
score as though it were a true score, and then transforming that score
into the θ-scale using the test characteristic curve (TCC). More
common IRT approaches for estimating θ, find the likelihood of an
examinee’s response vector, which is then used to compute a
maximum-likelihood or Bayes-mean-or-modal estimate of θ. In the case of
Basyesian or maximum likelihood estimates, asymptotic estimates of the
conditional standard errors of measurement (SEMs) may be computed using
the information function. For direct estimates of θ based on the
TCC, other approaches must be used to obtain conditional SEMs.
Two methods are discussed—an “exact” method based on the compound
binomial distribution of the number-correct score for fixed θ, and a
simple approximation based on a Taylor series approximation.
Examples from actual tests are presented.
- 04/10/06
Part One
Title:
Challenges in
Measuring Substance Involvement
Wenjing Huang
Department
of Psychology
UNC - Chapel Hill
Part Two
Title:
Power
Analysis in Structural Equation Modeling
Taehun Lee
Department of Psychology
UNC - Chapel Hill
- 04/17/06
Title:
Psychology's
Casual Regard for Non-Probability Samples: Examination &
Implications
Sonya Sterba
Department
of Psychology
UNC - Chapel Hill
- 04/24/06
Title:
Two Models
for Longitudinal Item Response Data
Dr. Cheryl Hill
Department
of Psychology
UNC - Chapel Hill
- 05/01/06
Title:
Race, Place
and the Use of Psychotropic Medications among Children and Youth
Dr.
Michael Foster
School
of Public Health
UNC - Chapel Hill
|
|
