Text cohesion is a driving factor of comprehension and 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.

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The Coh-Metrix project is sponsored by the IES (formerly OERI). Any opinions, findings, and conclusions or recommendations expressed on these pages do not necessarily reflect the views of the funding agency.

Please direct any questions and comments to coh-metrix@mail.psyc.memphis.edu
Last revision: 09/12/06

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