1. This report contains sample statistics, not population estimates. That is, the data represent only those psychologists who responded to the survey, and therefore, inferences about nonrespondents based on the survey results cannot be made. All tables include the number of respondents who provided information on a specific item/question. Although the percentages for several characteristics are reasonably accurate, readers of this report should consider possible error that may be introduced by nonresponse.

2. The data in this report are drawn from doctoral-level psychologists with varying degrees (e.g., Ph.D., Psy.D.), specialty areas (e.g., clinical psychology, neuropsychology, experimental psychology), and licensure status. Readers should be aware that differences in the data may exist on these three variables alone.

3. One should always exercise caution when comparing the results of this survey with other national surveys that report data on psychologists (e.g., National Science Foundation, Commission on Professionals in Science and Technology). Factors such as the population sample used, differences in grouping data, and the time frame in which data are based can yield varying results.

4. Unless otherwise specified, the descriptive statistics in the brief summaries that precede the tables and figures are typically based on the cumulative data across all departments within medical school settings. Statistics for particular department types may be found in the tables and/or figures that correspond to that section.

5. For salary data, no statistics are provided where the N is less than 10 or where the standard deviation is 0. In these instances, only the N is provided.

6. The number of respondents in some categories is very small. Therefore, the statistics reported should be viewed with caution.

7. Column percentages may not total to 100% due to rounding.

8. In some instances, respondents are asked to provide multiple responses. Therefore, percentages may exceed 100%.

9. Medians, quartiles, means, and standard deviations are reported for several analyses. The median may be the most useful measure of central tendency since it is less influenced by extreme values than the arithmetic mean. In most of the tables, both median and mean salaries are presented; observed differences reflect the skewness in the distributions.

10. Data in this report are based on a nationwide sample. For locations where the cost of living differs significantly from the national average, salaries would be expected to vary accordingly. Section 6 contains information on salaries by region and for selected metropolitan areas.

11. The nine geographic regions comprising states in this report were adapted from the categorization used by the U.S. Department of Commerce's Bureau of the Census. The states comprising each cluster are listed in Appendix B.

12. The category "Years Since Doctoral Degree" is included to provide a broad gauge of the years of experience that a psychologist has accrued. Readers should be mindful, though, that years since doctorate and years of experience are not parallel terms, and may not necessarily coincide.

13. The tables report salaries for medical school psychologists on an 11-12-month basis. Nevertheless, a small number of these psychologists operate on a 9-10-month academic year. In these cases, the 11-12-month salaries can be converted to their 9-10-month equivalents by multiplying by 9/11.