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Publications

Conceptual understanding of sources of uncertainty: A new perspective on classifying student thinking about measurement

Cornell Affiliated Author(s)
Author
Emily Stump
Gina Passante
Natasha Holmes
Abstract
Measurement uncertainty is a key concept in undergraduate physics laboratory courses. Prior work has introduced two paradigms of student thinking about sources of measurement uncertainty: pointlike thinkers, who believe that a single measurement can produce the true value in an experiment, and setlike thinkers, who believe that a set of measurements is necessary to draw conclusions. Other work, however, has suggested that very few students are pointlike thinkers and many students do not apply consistent pointlike or setlike thinking in all contexts.
Conference Name
APS April Meeting 2023
Date Published

Exploring student framing in non-traditional physics labs

Cornell Affiliated Author(s)
Author
Natasha Holmes
Meagan Sundstrom
David Hammer
Rachel Scherr
Ian Descamps
Sophia Jeon
Abstract
Too often, traditional physics laboratory exercises have trained students to expect to follow rote procedures and confirm known results. Nationally, labs are being redesigned to help students to learn and to use practices of authentic scientific research. As instructors and departments make these changes, we must understand how students experience these shifts in both pedagogy, learning goals, and epistemology.
Conference Name
APS April Meeting 2023
Date Published

Using networks to relate student interactions to their recognition of strong peers

Cornell Affiliated Author(s)
Author
Meagan Sundstrom
Lee Simpfendoerfer
Annie Tan
Natasha Holmes
Abstract

Gaining recognition from peers has been shown to improve student persistence and career intentions in physics. It is important, therefore, to understand how students develop perceptions of their peers. Prior research suggests that interactions are one possible mechanism for peer recognition: interacting with others allows students to demonstrate their physics skills and knowledge and acquire recognition as a physicist. To probe this explanation directly, we use methods from social network analysis to compare students' self-reported interactions to their recognition of strong peers.

Conference Name
APS April Meeting 2023
Date Published

Validating a Weekly Survey to Understand Student Division of Roles in Physics Labs

Cornell Affiliated Author(s)
Author
Matthew Dew
Emily Stump
Natasha Holmes
Abstract
In introductory physics laboratories, students typically work in groups where they divide and share different roles to complete assignments. Data on student participation in these different roles within groups help assess equity in labs. However, little work has investigated the division of these roles week-to-week with class observations as it is a time-intensive process. To address this, we designed a closed-ended survey delivered weekly during lecture to measure student perceptions of their involvement in various roles.
Conference Name
APS April Meeting 2023
Date Published

Why the machine (dis)agrees: understanding uncertainty in natural language processing classifications

Cornell Affiliated Author(s)
Author
Rebeckah Fussell
Natasha Holmes
Abstract
As interest increases in using natural language processing methods ( machine coding ) to supplant labor-intensive human coding of survey responses, the physics education research community needs methods to determine the accuracy and reliability of machine coding. Existing literature uses measures of agreement between human and machine coding (e.g., Cohen s kappa) to assess machine coding.
Conference Name
APS April Meeting 2023
Date Published

Introductory physics students' recognition of strong peers: Gender and racial or ethnic bias differ by course level and context

Cornell Affiliated Author(s)
Author
M. Sundstrom
A.B. Heim
B. Park
N.G. Holmes
Abstract

Researchers have pinpointed recognition from others as one of the most important dimensions of students' science and engineering identity. Studies, however, have found gender biases in students' recognition of their peers, with inconsistent patterns across introductory science and engineering courses. Toward finding the source of this variation, we examine whether a gender bias exists in students' nominations of strong peers across three different remote, introductory physics courses with varying student populations (varying demographics, majors, and course levels).

Journal
Physical Review Physics Education Research
Date Published
Funding Source
DGE-2139899
DUE-1836617

Exploring diverse students’ negotiation of lab roles through positioning

Cornell Affiliated Author(s)
Author
M. Akubo
M. Sundstrom
N.G. Holmes
Abstract

Prior work has found inequities in what experimental roles students take on during instructional labs. Research also suggests that this role division might arise implicitly and that prompting explicit role negotiation might improve equity in lab group work. To understand these various ways students negotiate roles in their lab groups, we use the lens of positioning to analyze two different video episodes of a gender-and-race-diverse group of three students.

Conference Name
Conference
Date Published
Funding Source
DGE-2139899
DUE-1836617

Machine learning for automated content analysis: characteristics of training data impact reliability

Cornell Affiliated Author(s)
Author
R. Fussell
A. Mazrui
N.G. Holmes
Abstract

Natural language processing (NLP) has the capacity to increase the scale and efficiency of content analysis in Physics Education Research. One promise of this approach is the possibility of implementing coding schemes on large data sets taken from diverse contexts. Applying NLP has two main challenges, however. First, a large initial human-coded data set is needed for training, though it is not immediately clear how much training data are needed. Second, if new data are taken from a different context from the training data, automated coding may be impacted in unpredictable ways.

Conference Name
Conference
Date Published
Funding Source
DUE-2000739

So Unfair it’s Fair: Equipment handling in remote versus in-person introductory physics labs

Cornell Affiliated Author(s)
Author
M. Dew
A.M. Phillips
S. Karunwi
A. Baksh
E.M. Stump
N.G. Holmes
Abstract

While understanding laboratory equipment is an important learning goal of physics laboratory (lab) instruction, previous studies have found inequities as to who gets to use equipment in in-person lab classes. With the transition to remote learning during the COVID-19 pandemic, class dynamics changed and the effects on equipment usage remain unclear. As part of a larger effort to make intro physics labs more equitable, we investigated student equipment usage based on gender and race in two introductory physics lab courses, one taught in-person and one taught remotely.

Conference Name
Conference
Date Published
Funding Source
DUE-1836617

Student views of what counts as doing physics in the lab

Cornell Affiliated Author(s)
Author
E.M. Stump
N.G. Holmes
Abstract

Numerous studies have identified gender inequity in how students divide roles in lab courses. Few studies, however, have probed how these inequities impact women’s experimental physics identity development. In this work, we used closed-response surveys to investigate which lab tasks students view as part of “doing physics” and how these designations varied by gender. In both courses, we found that most students viewed working with the experimental apparatus, taking lab notes, doing data analysis, and thinking about the physics theory behind the experiment as part of doing physics.

Conference Name
Conference
Date Published
Funding Source
DGE-2139899
DUE-1836617