Subjective Probability Task: Validity and Reliability

Objective: Recent studies highlighted the importance of future prospections in cognitive-behavioural therapy for the promotion of healthy coping strategies and thinking patterns. This means a concomitant line of research on developing appropriate psychometric measures for the assessment of future prospections assumes significant importance. Literature review of published research in Turkish revealed a lack of empirically grounded scales on future prospections based on cognitive-behavioural theories. Therefore, this study aimed at translating the Subjective Probability Task into Turkish and identifying its relevant psychometric properties. Method: Study sample consisted of 198 voluntary university students studying in Ankara University, Turkey. In addition to the Subjective Probability Task, we also used Beck Depression Inventory, Automatic Thoughts Questionnaire, and Dysfunctional Attitudes Scale– Short Form. Confirmatory factor analysis was done with a separate sample of university students. Results: The results of exploratory factor analysis conducted revealed a two-factor model: positive prospections (alfa=.86) and negative prospections (alfa=.90). This model was supported by a confirmatory factor analysis conducted, and other statistical tests that followed gave further insights on the validity of the scale in Turkish. Discussion: Subjective Probability Task was found to be a valid and a reliable test for use in the study of depression symptom structures and severity. The test is seen as a valuable instrument for theoretical conceptualizations as well as preventative measures, and can be used in studies focusing on the diagnosis and treatment of the debilitating disease

Turkish Adaptation of Driver’s Angry Thoughts Questionnaire

Traffic, the expression of anger is often an environment that we come across. When the anger of the individual to consider the negative impact they have on traffic, the evaluation of the different components related to the driver anger and their measurement is of utmost importance. The main purpose of this study, which has been developed in relation to anger thinking in traffic "Driver’s Angry Thoughts Questionnaire" (DATQ) by the Turkish version is to achieve the reliability and validity findings. For this purpose between 20-62 years old, with a driver's license and drive a vehicle at least one year 127 women (42.8%) and 170 men (57.2%) accounted for a total of 297 people, including sample. In this study, it was used Driver’s Angry Thoughts Questionnaire (DATQ) as well as Driving Anger Expression Inventory (DAX) and Driving Anger Scale (DAS) as an instruments. As a result of factor analysis "judgmental thinking," "revenge thinking" "positive coping thinking", "aggressive thinking" and "pejorative labeling thinking" were obtained, including a five-factor structure. Cronbach alpha reliability coefficients of this factor subscales ranged from .86 to .95. Scale item-total correlations and split-half reliability coefficients were also high. All results obtained are discussed in the light of the literature

A WASHING THEORY FOR UNSATURATED FILTER CAKES USING THE CAPILLARY MODEL

A rigorous washing theory is developed using the area averaging technique for unsaturated filter cakes. Limiting cases of the resulting equations are investigated. The assumptions used in the modelling are verified. The mass transfer parameters, which are evaluated by the application of the moment analysis, are shown to be directly proportional with the volumetric flow rate of the wash liquor. Experimental results also indicate that, for a given wash liquor volumetric flow rate, the increase in the cake thickness causes an increase in the mass transfer parameters. It should be noted that the proposed model is applicable for large particle sizes. As particle size becomes finer and the size distribution becomes wider, the model should be modified by including dead void spaces containing pockets of the mother liquor in the filter cakePublisher's Versio