can a person's biological age influence their intellectual quotient level?
IQ can change to some degree over the course of childhood; practitioners' handbooks and textbooks on IQ testing have reported IQ declines with age after the beginning of adulthood.
Intelligence quotient
IQ can change to some degree over the course of childhood. In one longitudinal study, the mean IQ scores of tests at ages 17 and 18 were correlated at r=0.86 with the mean scores of tests at ages five, six, and seven and at r=0.96 with the mean scores of tests at ages 11, 12, and 13.

For decades, practitioners' handbooks and textbooks on IQ testing have reported IQ declines with age after the beginning of adulthood. 
your iq score lies within a range of 129 up to 145 UNANSWERABLE what is the full form of this mentioned abbreviation? Intelligence quotient what are some of the tests taken to determine a person's intellect? Wechsler Adult Intelligence Scale (WAIS); Wechsler Intelligence Scale for Children; Stanford-Binet Intelligence Scales, Woodcock-Johnson Tests of Cognitive Abilities etc. who developed the first one? David Wechsler what is the profession of this person mentioned? He was a psychologist what was this person's intellectual score? UNANSWERABLE how is the low intellectual score classified? UNANSWERABLE what is the intellectual score for someone who exhibits a gifted ability? 130 and above are there any characteristics of identifying someone with gifted abilities? No, a major point of consensus among all scholars of intellectual giftedness is that there is no generally agreed definition of giftedness. how is the intellectual score level calculated? It is derived from a set of standardized tests or subtests designed to assess human intelligence.
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Intelligence quotient [SEP] Age
A variety of studies of IQ and aging have been conducted since the norming of the first Wechsler Intelligence Scale drew attention to IQ differences in different age groups of adults. Current consensus is that fluid intelligence generally declines with age after early adulthood, while crystallized intelligence remains intact. Both cohort effects (the birth year of the test-takers) and practice effects (test-takers taking the same form of IQ test more than once) must be controlled to gain accurate data. It is unclear whether any lifestyle intervention can preserve fluid intelligence into older ages. The exact peak age of fluid intelligence or crystallized intelligence remains elusive.