Abstract
Objective: The objective of the study was the development, validation and psychometric evaluation of the suicidality scale: suicidal ideation, intention and attempts.
Methodology: This cross sectional analytical study was carried out at Department of Psychology, University of Gujrat from January 15th to May 25th 2019. The data were collected from adolescents using the convenience sampling technique. Firstly, the translation of Suicide Scale for Adolescents was conducted in in English. The forward-backward translation method was used for translation, which was followed by expert panel evaluation, linguistic and conceptual verification of measure and then a final English translated version was finalized. Further test retest administration was used for field administration of these items over 250 adolescents by self-report scale. For validation, samples of 70 adolescents were selected by using convenient sampling.
Results: There was a correlation of test retest administration in between .312 to .688 of the 25 items. The model fit summary of Confirmatory Factor Analysis showed a p-value of 0.00 and the it was specified that if the p value is o.05 or less, the departure of the data from the model is significant at the 0.05 level. Therefore, the structure of the questions was confirmed. The reliability of the scale was .918 with established convergent (. 535**) and divergent (-.054).
Conclusion: A reliable and valid translation of suicidality scale: suicidal ideation, intention and attempts English version was developed from already developed Urdu version.

Key words: Adolescents, English, Factor Analysis, Reliability, Suicide, Translation.