TY - JOUR
T1 - Adolescents cannabis use intention
T2 - validating a theory of planned behavior questionnaire in four European countries
AU - Morell-Gomis, Ramón
AU - Moriano, Juan A.
AU - Laguía, Ana
AU - Dias, Paulo
AU - Lloret, Daniel
PY - 2019/1/2
Y1 - 2019/1/2
N2 - Cannabis use remains an important concern in modern societies, adolescence being the critical period when the adolescents start to use cannabis. This study is aimed at extending and validating the Cannabis Use Intention Questionnaire (CUIQ), which was previously developed in Spain and based on the Theory of Planned Behaviour, in Italy, Portugal, and Romania. There are existing questionnaires which assess cannabis use problems and several risk factors; however, there is a need for a questionnaire based on a proven theory to assess interventions. A total of 3447 adolescents aged between 14 and 18 years old from Italy (43.14%), Portugal (23.90%), and Romania (32.96%) participated in this study. The data were analyzed using structural equation modeling. The scores were validated against cannabis use and the risk of experiencing problems related to cannabis use. The cut-off points were calculated using Receiver Operating Characteristic (ROC) curve analysis. The reliability index, α ordinal, indicated good reliability on the scales of attitudes, perceived behavioral control and intention. The results confirmed the four dimension structure of CUIQ. The invariance tests indicated that the structure and measurement of the scales were equivalent in all countries. The cut-off points showed good classification capability, especially for intention and attitudes. The CUIQ allows comparative studies addressed to study underlying psychological processes in adolescents’ decisions to use cannabis as well as to assess interventions aimed to reduce the problem of cannabis use.
AB - Cannabis use remains an important concern in modern societies, adolescence being the critical period when the adolescents start to use cannabis. This study is aimed at extending and validating the Cannabis Use Intention Questionnaire (CUIQ), which was previously developed in Spain and based on the Theory of Planned Behaviour, in Italy, Portugal, and Romania. There are existing questionnaires which assess cannabis use problems and several risk factors; however, there is a need for a questionnaire based on a proven theory to assess interventions. A total of 3447 adolescents aged between 14 and 18 years old from Italy (43.14%), Portugal (23.90%), and Romania (32.96%) participated in this study. The data were analyzed using structural equation modeling. The scores were validated against cannabis use and the risk of experiencing problems related to cannabis use. The cut-off points were calculated using Receiver Operating Characteristic (ROC) curve analysis. The reliability index, α ordinal, indicated good reliability on the scales of attitudes, perceived behavioral control and intention. The results confirmed the four dimension structure of CUIQ. The invariance tests indicated that the structure and measurement of the scales were equivalent in all countries. The cut-off points showed good classification capability, especially for intention and attitudes. The CUIQ allows comparative studies addressed to study underlying psychological processes in adolescents’ decisions to use cannabis as well as to assess interventions aimed to reduce the problem of cannabis use.
KW - Adolescents
KW - Attitudes
KW - Cannabis
KW - Intention
KW - Theory of planned behavior
KW - Validation
UR - http://www.scopus.com/inward/record.url?scp=85056090994&partnerID=8YFLogxK
U2 - 10.1080/14659891.2018.1510050
DO - 10.1080/14659891.2018.1510050
M3 - Article
AN - SCOPUS:85056090994
SN - 1465-9891
VL - 24
SP - 66
EP - 72
JO - Journal of Substance Use
JF - Journal of Substance Use
IS - 1
ER -