Carvalho, CéliaPereira, Vanessa Micaela da Ponteda Motta, CarolinaPinto-Gouveia, JoséCaldeira, Suzana NunesPeixoto, Ermelindo BernardoFenigstein, Allan2016-03-272016-03-272014-08Barreto Carvalho, C., Pereira, V., Sousa, M., da Motta, C., Pinto-Gouveia, J., Caldeira, S. N., Peixoto, E. & Fenigstein, A. (2014). Paranoia in the General Population: a revised version of the General Paranoia Scale for adolescents. "European Scientific Journal", 10(23): 128-141.1857-7881 (Print)1857-7431 (Online)http://hdl.handle.net/10400.3/3683The aim of the current study was to validate the General Paranoia Scale for Portuguese Adolescents population (GPS-A). This scale assesses the paranoid ideation in non-clinical population. Results from a confirmatory factor analysis of the scale on 1218 youths confirmed an alternative model to the one-dimensional model proposed by Fenigstein and Vanable (1992) comprising three different dimensions (Mistrust thoughts, persecutory ideas and depreciation). This alternative model presented a good fit: χ2 (162)= 727.200, p = .000; CFI = .925; RMSEA = .054, P(rmsea ≤0.05) = .000; PCFI = .788; AIC = 863.200. All items presented adequate factor loadings (λij ≥0.5) and individual reliability ((λij)2 ≥0.25). Further data analysis on the scale revealed that the GPS-A is an adequate assessment tool for adolescents, with good psychometric characteristics and high internal consistency.engParanoid IdeationAdolescenceContinuumSocial Defensejournal article