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PCA for both samples

PCA for both samples

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Introduction: Given the increasing prevalence of mental health problems in the general population, it is indispensable to use assessment tools aimed to assess the outcome of therapeutic interventions in order to refine the process of psychological rehabilitation. Method: We describe the process of adaptation into Spanish and a first psychometric...

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Context 1
... in the original study 7 , the item mappings resulting from the oblique rotation (see Table 3) suggest one compo- nent of positively worded (3, 5 and 10) and one of negative- ly worded items (1, 2, 4, 6, 7, 8 and 9). Moreover, it should be noted that the correlation between factors for the clinical sample was almost identical to that of the original study (0.36). ...

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... The students rated how often over the last week they had felt in the way described by each item, by using a 5-point scale that ranges from 1 ("not at all") to 5 ("most or all of the time"). The psychometric properties of the YP-CORE have been investigated in clinical as well as in nonclinical samples [e.g., (67,68)] and there is evidence of its good psychometric properties in different countries [e.g., (69,70)], as well as in the Italian context (71). The alpha coefficient for the current study was 0.74 at T1 and 0.84 at T2. ...
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Desde finales del siglo XX la práctica basada en la evidencia ha sido el paradigma de referencia para establecer la eficacia de los tratamientos sin que ello estuviera exento de controversia. Algunos autores cuestionan seguir un modelo de investigación médico que tiene limitaciones importantes al aplicarse a la investigación en psicoterapia. Por otro lado, el esfuerzo por preservar la validez interna en los ensayos clínicos aleatorizados dificulta la generalización de sus resultados. Además, si se sigue el paradigma basado en la evidencia para determinar qué tratamientos se aplican en los servicios de salud pública se emplean unos criterios de eficacia estáticos y excesivamente restrictivos. Las voces críticas han ido formulando propuestas que configuran un paradigma alternativo (y seguramente complementario), el de la evidencia basada en la práctica. Este enfoque de la investigación ha ganado fuerza al cubrir algunos de los vacíos de la práctica basada en la evidencia. La idea principal reside en evaluar de forma fiable y continuada con instrumentos de gran aplicabilidad (p. ej., CORE-OM) la práctica clínica real, llamada también investigación naturalística, acumulando muestras grandes, no seleccionadas. Se busca así alcanzar una alta capacidad de generalización ya que su muestra son los mismos pacientes que consultan en los servicios. A su vez, permite manejar una base de datos con la que ofrecer una retroalimentación del progreso (o deterioro) terapéutico permitiendo a los terapeutas realizar mejoras. En consecuencia, esta aproximación puede propiciar avances significativos en la investigación aplicada, contribuyendo al fortalecimiento de la psicología como disciplina científica.