JERUSALEM — A State Department-funded study released Monday on the contentious issue of how Israelis and Palestinians depict each other in textbooks says both are locked into narratives that portray the other side as the enemy and erase it from maps, yet do not dehumanize each other.

The independent study, billed as the first empirical and quantitative analysis of textbooks on both sides, was boycotted by Israel’s Education Ministry, which refused to cooperate. The ministry called the study biased and said it was based on a false comparison between the Israeli and Palestinian school systems....

Funded with a grant from the State Department’s Bureau of Democracy, Human Rights and Labor, the study was directed by Bruce E. Wexler, a professor of psychiatry at Yale University who worked with two Israeli and Palestinian experts on textbook analysis, subjecting books from both sides to identical evaluation questions, with results fed to a database....