| Summary of Research on the
Validity of Graphology
|
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| Study | Year | Country | Sample | Criterion | Validity |
| Sonnemann & Kernan | 1962 | Germany | Executives | Supervisor ratings | .74 |
| Keinan & Barak | 1984 | Israel | Military officers | Training success | .26 |
| Ben-Shakhar et al. | 1986 | Israel | Bank tellers | Supervisor ratings | .25 |
| Rafaeli & Klimoski | 1983 | United States | Salesmen | Sales performance | .04 |
| Rafaeli & Klimoski | 1983 | United States | Salesmen | Supervisor ratings | .00 |
| Zdep & Weaver | 1967 | United States | Salesmen | Sales commissions | - .05 |
| Source: Aamodt, M. G. (2004). Applied industrial/organizational psychology (4th ed.). Belmont, CA: Wadsworth Publishing |
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