Sentences with phrase «demographic studies since»

Demographic studies since the 1980s have suggested son preference and sex - selective abortions of girls were the main causes of the skewed sex ratio in these countries.

Not exact matches

Many things have changed, especially the demographics of the first grade classroom, since the late Jeanne Chall produced her landmark study, Learning to Read: The Great Debate in 1967.

Through a series of cross-sectional and longitudinal studies completed in New Jersey and other states since 2011, my colleagues and I have begun the process of demonstrating the predictive accuracy of family and community demographic variables in Grades 3 - 8, and high school

National Pet Owners Survey Since 1988, APPA has been gathering information and publishing the industry's most comprehensive consumer research study of demographics, buying habits and other traits of owners of dogs, cats, fish, birds, reptiles and small animals.

Since attachment style and socio - demographic variables are associated (Schachner et al., 2008; Del Giudice, 2011) and a representative study on the relationship status and attachment style is missing, the aim of the present study was to analyze attachment style and socio - demographic variables in a large representative sample.