Effectiveness of Positive Psychological Intervention on Resilience Improvement in Nurses

Resilience will be measure with the Connor Davidson Resilience Scale (CD-RISC). The CD-RISC was developed in the United States to measure individuals' ability to cope effectively when faced with adversity (Connor & Davidson, 2003). The revised scale includes 25 items and three dimensions (tenacity, strength, and optimism). Each item is rated on a Likert-type scale ranging from 0 (not at all) to 4 (almost always). The Cronbach's alpha value for the CDRISC 25 has been reported to be 0.91 in a study on a sample of nurses (Arias González et al., 2015).

Stress will be measured by the Perceived Stress Scale (PSS). The PSS-10 is a 10-item questionnaire that is widely used to assess stress levels in young people and adults aged 12 and above. The Cronbach's alpha value for the Perceived Stress Scale (PSS-10) in nurses has been reported to be 0.93 in a study in South Africa (Engelbrecht, 2022). Items are rated on a 5-point scale from 0 (never) to 4 (very often). Positively worded items are reverse scored before summation, producing a total score ranging from 0 to 40, with higher scores indicating greater perceived stress.

Patient Health Questionnaire-9 (PHQ-9). The PHQ-9 is a nine-item self-report tool that is used to screen for the presence and severity of depression. Each item is scored from 0 to 3, providing a total score ranging from 0 to 27, with higher scores indicating greater severity of depressive symptoms. The Cronbach's alpha for the PHQ-9 has been reported to be 0.89 in a study by Kroenke et al. (2001).

Burnout will be measure with The Maslach Burnout Inventory (MBI). MBI is a psychological assessment instrument that measures burnout as a continuum on three different dimensions: Emotional Exhaustion, Depersonalization, and reduced Personal Accomplishment. The MBI is considered the "gold standard" for measuring burnout. The Cronbach's alpha value for the Maslach Burnout Inventory (MBI) in nurses has been reported to range from 0.70 to 0.90, indicating good internal consistency and reliability (Trigo et al., 2018).

Work performance will be measured by the Individual Work Performance Questionnaire (IWPQ). The IWPQ assesses individual work performance across three dimensions: task performance, contextual performance, and counterproductive work behavior. This questionnaire includes items that evaluate how well nurses plan and execute their work, their willingness to help colleagues and take on additional responsibilities, and their ability to avoid counterproductive behaviors. Items are rated on a 5-point response scale. The IWPQ is known for its reliability, with Cronbach's alpha values typically ranging from 0.70 to 0.85 across different dimensions, making it a dependable tool for measuring work performance.