ex1321 {Sleuth3}

Pygmalion

Description

A data set simulated to match the summary statistics and conclusions from Rosenthal and Jacobson's Pygmalion study on elementary school students. The researchers assigned students at random to a pygmalion or control treatment group. They supplied information to the teachers of those in the pygmalion group with the false information that an intelligence test had indicated that the student was likely to excel. The researchers wished to see if the change in intelligence test scores for the students tended to be larger for those students labeled as likely to excel.

Usage

ex1321

Format

A data frame with 320 observations on the following 5 variables.

Student

a student identification number

Grade

the student's grade, 1 through 6

Class

a factor with 17 levels "1a", "1b", and so on, to indicate the 17 distinct teacher/classrooms.

Treatment

a factor with levels "pygmalion" and "control" corresponding to whether the researchers had told the teacher that the student was “likely to succeed” or not

Gain

the intelligence test score taken at the end of the school year minus the intelligence test score taken at the begging of the school year

Source

Ramsey, F.L. and Schafer, D.W. (2013). The Statistical Sleuth: A Course in Methods of Data Analysis (3rd ed), Cengage Learning.

References

Rosenthal, R. and Jacobson, L. 1968, Pygmalion in the Classroom: Teacher Expectation and Pupil's Intellectual Development, Holt, Rinehart, and Winston, Inc.

Examples

str(ex1321)