A Positive Psychology Intervention for Fibromyalgia Patients Using ICT´s

This is one of the most widely questionnaires used to evaluate severity of depression in pharmacological and psychotherapy trials. The instrument has good internal consistency (Cronbach's alpha of 0.76 to 0.95) and test-retest reliability of around 0.8. The Spanish version of this instrument has also shown a high internal consistency (Cronbach's alpha of 0.87) for both the general and the clinical population (Cronbach's alpha of 0.89). Summed to obtain the total score, which can be a maximum of 63 points.

The PCS instructions ask participants to reflect on past painful experiences, and to indicate the degree to which they experienced each of 13 thoughts or feelings when experiencing pain, on 5-point scales with the end points (0) not at all and (4) all the time. The PCS yields a total score and three subscale scores assessing rumination, magnification and helplessness. The PCS has been shown to have adequate to excellent 6 internal consistency (coefficient alphas: total PCS = 0.87, rumination = 0.87, magnification = 0.66, and helplessness = 0.78).

This measure analyzes the levels of positive (PA) and negative affect (NA). The instrument consists of 20 items, 10 for each level of affect. Participants rate on a 5-point scale (Not at all - Extremely). The Spanish version has demonstrated high internal consistency (0.89 to 0.91 for PA and NA in women and 0.87 for AP and 0.89 for AN in men) in college students.

This scale measures positive and negative expectancies about future events. It consists of 20 statements referring to negative expectancies and 10 statements referring to positive expectancies. Participants answer on a 7-point scale (Not at all likely to occur - Extremely likely to occur). Some studies have found an appropriate levels of internal consistency for positive and negative expectancies (α=0.80-0.82 and 0.91, respectively).

It consists of 10 items that evaluate perceived well-being in different areas (physical, psychological/emotional, occupational functioning, interpersonal functioning, among others)

OASIS is a brief instrument consisting of 5 items that measure the frequency and severity of anxiety, as well as the level of avoidance and work/school/home and social interference that anxiety produces.

This is a 12-item scale that evaluates perceived global self-efficacy and three main aspects of it: initiative, persistence and effort. All items are responded to on a 5-point scale, ranging from 1 (never happens to me) to 5 (always happens to me).

This scale measures positive and negative expectancies about future events. It consists of 20 statements referring to negative expectancies and 10 statements referring to positive expectancies. Participants answer on a 7-point scale (Not at all likely to occur - Extremely likely to occur). Some studies have found an appropriate levels of internal consistency for positive and negative expectancies (α=0.80-0.82 and 0.91, respectively).

The FIQ-R is a 10-item self-report questionnaire that measures the health status of patients with FMS assessing the interference of FMS in their daily life.

It is a well validated self-report instrument for the measurement of general psychological distress.

This questionnaire assess extrinsic and intrinsic motivation to practice the imagery exercise, rated on a 9-point scale ranging from 1 "not at all for this reason" to 9 "completely for this reason". SCM has been correlated withparticipants' frequency of practicing a daily imagery exercise and with self-reported imagery performance, a key aspect in self-applied interventions.

This scale assesses the neuroticism level of the individual, showing if he is stable or neurotic. This subscale is composed by 12 items of dicotomic response (yes-not). Regarding psychometric properties, studies found an alpha coefficient between 0.73 and 0.82.