A gifted person can be found out by vatious means. At present, intellegence tests and achievement tests are more frequently used for that purpose. At some places, a specific IQ score is taken as a base, e.g. a person with IQ above 130 is considered to be a gifted person.
Recently the following types of data are taken as indicators of giftedness :
His/Her IQ in a individual of group test of intelligence.
Teacher's judgement about his/her abilities and grades given in school.
Parent's judgement and evaluation through interview.
Appraisal of his social and emotional maturity.
To recognize gifted children other factors like adjustment, hisamitions, self-evalution, strength of motive etc. are also informative.