| achievement | Success in bringing an effort to the desired end; the degree or level of success attained in some specified area (especially. Scholastic) or in general. (12 Dec 1998) |
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| achievement age | The relationship between the chronologic age and the age of achievement, as established by standard achievement tests. (05 Mar 2000) |
| achievement motive | An acquired, chronic need to succeed in the face of recognizable obstacles; its strength is usually diagnosed from recurring themes in stories told by the individual while taking a thematic apperception test or from other assessment instruments used by clinical psychologists. (05 Mar 2000) |
| achievement test | A standardised test used to measure acquired learning, e.g., competence in a specific subject area such as reading or arithmetic, in contrast to an intelligence test which is a useful index of potential ability or learning. (05 Mar 2000) |