Attached files
| file | filename |
|---|---|
| EX-31.2 - EXHIBIT 31.2 - EXPONENT INC | v320913_ex31-2.htm |
| 10-Q/A - 10-Q/A - EXPONENT INC | v320913_10qa.htm |
Exhibit 31.1
CERTIFICATION
I, Paul R. Johnston, Ph.D., certify that:
| 1. | I have reviewed this quarterly report on Form 10-Q/A of Exponent, Inc.; and |
| 2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
| Date: August 13, 2012 | |
| /s/ Paul R. Johnston | |
| Paul R. Johnston, Ph.D. | |
| Chief Executive Officer |