This report introduces the General Education Development Testing Services (GEDTS) Administrator screening model for adults with learning disabilities. The screening model is designed to identify adults whose educational achievement is significantly below overall potential due to an informational processing deficit and who are thus eligible for testing accommodations in taking the General Educational Development Tests. To investigate the diagnostic validity of the screening model, a study explored whether the Wechsler profiles of 464 adults with learning disabilities or attention deficit disorders and referred for testing accommodations varied as a function of gender. Results found that women requesting accommodations are older and have lower overall ability in most areas measured using the Wechsler intelligence scales. Women did as well as men when recalling a series of numbers and they know definitions to words at a somewhat closer level to men. They did better than men when copying sign/symbol combinations. Gender differences were also found in comparison of discrepancies among factors and measure of overall ability. Test results also confirm the fact that adults with learning disabilities tend to have lower verbal functioning. Results of the study support the GEDTS screening model. (Contains 26 references.) (CR)