University of Memphis - Psychology: McNamara: Research

Danielle S. McNamara (Ph.D. 1992, University of Colorado, Boulder) joined the Cognitive Psychology Program at the University of Memphis in August, 2002. As a cognitive scientist, a great deal of her work involves the theoretical study of cognitive processes as well as the application of cognitive principles to educational practice. The majority of her current research concerns text comprehension. One focus of that research (funded by NSF IERI ) examines effects of students' reading strategies on science course performance. The overarching goal of the IERI project is to develop methods to improve students' use of reading strategies. To that end, she and her research team have developed an automated reading strategy tutor called iSTART, which teaches students to more actively process science text. A second focus of her reading research is on text cohesion and how that interacts with reader aptitudes. A current project (funded by IES) examines effects of text coherence and is working to create automated measures of text difficulty (called Coh-Metrix). She also studies a variety of phenomena related to comprehension skill, working memory, ATC to pilot communication, expertise, knowledge acquisition, and the generation effect.

Click here to get a more detailed research statement of Dr. McNamara.


Funding



INTERNAL

SOURCE

AMOUNT

PERIOD

McNamara, D.S. (PI)

College of Sciences, Old Dominion University

$6,000

1998-1999

McNamara, D.S. (PI)

Old Dominion University

$9,000

1999-2000


Current Projects


Promoting active reading strategies to improve students' understanding of science.
click here to read the project proposal

The problem addressed by this five-year project regards high-school students' understanding of and ability to learn from difficult science texts. The first purpose of this project is to examine high school students’ and teachers’ knowledge about metacognitive reading strategies to better ascertain the need for strategy interventions. The second purpose is to compare the effectiveness of three reading interventions and to thereby identify more effective methods for improving students’ comprehension skills. The third purpose is to determine whether the benefits of reading interventions depend on students’ skills, knowledge, or cultural environment. The fourth purpose is to develop a computerized training program (iSTART) that adaptively assigns a student to an appropriate training regime, and interactively provides reading training. Hence, this project bridges the two focus areas of the IERI initiative concerning reading skill acquisition and students’ understanding of increasingly complex scientific ideas. Within these areas, this project addresses issues regarding instructional practices in reading, the role of teacher learning and performance on student learning, optimal interventions for students at-risk of reading or academic failure, the development of better assessment techniques of knowledge and skill, and the use of technology to improve assessment and learning.
click here to go to the project website

Snow, C. (2002). Reading for understanding: Toward an R&D program in reading comprehension. Santa Monica, CA: RAND. [PDF]


Coh-Metrix: Automated Cohesion and Coherence Scores to Predict Text Readability and Facilitate Comprehension.
click here to read the project proposal

Text cohesion is a driving factor of comprehension. Text characteristics critically interact with readers’ abilities. By using advanced computational linguistic tools thoroughly tested in experimental research, this project provides the latest in experimental psychology, computational linguistics, education and computer science to measure and improve readability of texts.

Coh-Metrix is a computational cohesion and coherence metrics. It measures text difficulty at various levels of language, discourse, and conceptual analysis and adjusts the output according to the targeted reader. Often readers of various ages have difficulties reading narrative and expository texts because of a lack of cohesive devices in the text. These devices include referential, spatial, temporal, causal cohesion, and structural cues for the reader. Coh-Metrix suggests where cohesion is lacking for a particular reader group.
Coh-GIT is a Cohesion Gap Identification Tool that identifies the specific locations and types of cohesion gaps in text. Our second goal is to further investigate effects of text cohesion.

click here to go to the project website

Snow, C. (2002). Reading for understanding: Toward an R&D program in reading comprehension. Santa Monica, CA: RAND. [PDF]


Data-Link Aircraft Communications: An Examination of Interference, Coherence, and Workload.
click here to read the project proposal

Air traffic control (ATC) messages have been typically presented in the auditory modality via radio transmission. However, recent technology allows textual messages to be sent via data link. Data link messages are displayed on a small screen, which is situated at hip level in front of the pilot flying (PF) and the pilot not flying (PNF). In an ideal scenario, the message is read aloud by the PNF to the PF. The PF generally executes the ATC requests. The PNF then sends a message to accept the ATC request by pressing an accept button. This procedure contrasts with radio transmission wherein both pilots hear the ATC message, and acceptance and execution often take place simultaneously. Data link messages solve several problems associated with radio transmission such as message clarity and radio frequency congestion. Data link was also expected to reduce ATC errors and pilot errors. This expectation has not been confirmed. Rather, errors have persisted, though of a seemingly different nature than those associated with radio transmission. Coupled with the additional down-load time, data link messages also typically require 15 to 30 seconds longer to execute than does a radio transmitted message. The purpose of this project is to investigate fundamental differences between auditory and textual transmission of information to better predict errors as a function of modality and to ultimately develop a set of guidelines for data link transmission of ATC messages.
click here to go to the project website


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