Date of Award

6-15-2024

Document Type

Dissertation

Degree Name

Ph.D.

Organizational Unit

Morgridge College of Education, Research Methods and Information Science, Research Methods and Statistics

First Advisor

Yixiao Dong

Second Advisor

Nick Cutforth

Third Advisor

Mei Yin

Fourth Advisor

Cecilia Orphan

Keywords

Dynamic measurement modeling (DMM), Golf science, Golf statistics, Growth modeling, Mixed effects modeling

Abstract

This study demonstrates an effective and innovative approach to measuring the latent athletic abilities and capacities of professional golfers. I used nonlinear mixed effects growth modeling (e.g., Dynamic Measurement Modeling) to measure professional golfers’ ability levels and capacities for improvement. I accomplished this using a two-stage modeling approach. First, a crossed linear mixed effects model estimated each player’s ability level in each year. In the second stage, I used the results from the first stage to estimate several candidate nonlinear growth trajectories for players’ abilities over time. The quadratic growth trajectory was the best-fitting of these trajectories and was used to estimate each player’s individual-level capacity (maximum predicted ability). Validation results indicate that the ability estimates from stage one can outperform existing unidimensional measures of golfing ability and that the capacity estimates from the second stage are reliable and provide better forecasts of players’ future abilities than do single-timepoint estimates. This study demonstrates the applicability of latent variable statistics and longitudinal growth models to the study of sports, provides a novel statistical method to estimate player abilities and capacities in professional golf, and provides a tutorial for estimating Dynamic Measurement Models (DMM) using R.

Copyright Date

6-2024

Copyright Statement / License for Reuse

All Rights Reserved
All Rights Reserved.

Publication Statement

Copyright is held by the author. User is responsible for all copyright compliance.

Rights Holder

Mac Wetherbee

Provenance

Received from ProQuest

File Format

application/pdf

Language

English (eng)

Extent

178 pgs

File Size

1.2 MB



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