The so-called "Clinical High Risk" or "Ultra High Risk" for psychosis (CHR or UHR)
constitutes a paradigm used to detect those people who are more likely to develop a
psychotic disorder. Even though CHR is the most commonly used procedure for early
detection in this field, it shows some limitations: 1) The CHR detection is made through
the use of semi structured interviews that can only be applied by clinicians with
specialized training; 2) The evaluation is only conducted when there is a suspicion from
a professional, therefore, is more subjective and heterogeneous; 3) The CHR evaluation
with this especially risky patients could be overestimating the prevalence of high risk of
psychosis. The "psychometric high risk" paradigm tries to overcome these difficulties,
through the generalized, objective and structured use of self-reports to the early
detection of people with a greater vulnerability to psychosis. The objective of the
present study is to find the prevalence of people with high psychometric risk for
psychosis when the procedure is applied systematically per protocol to a general
population of adolescents and young adults from a day hospital. A sample of
adolescents and young adults, users of a day hospital, will complete the Spanish version
of the Prodromal Questionnaire - Brief version (PQ-B, Fonseca-Pedrero et al., 2021) as
a measure of psychometric high-risk of psychosis. The prevalences found will be
compared with the prevalence of both psychometric and clinical high-risk for psychosis
in both general and clinical populations. The advantages and disadvantages of these two
different approaches will be discussed.