Levels of modality for BDI Logic

The use of rational agents for modelling real world problems has both been heavily investigated and become well accepted, with BDI (Beliefs, Desires, and Intentions) Logic being a widely used architecture to represent and reason about rational agency. However, in the real world, we often have to deal with different levels of confidence in the beliefs we hold, desires we have, and intentions that we commit to. This paper extends our previous framework that integrated qualitative levels of beliefs, desires, and intentions into BDI Logic. We describe an expanded set of axioms and properties of the extended logic. We present a modular structure for the semantics which involves a non-normal Kripke type semantics that may be used for other agent systems. Further, we demonstrate the usefulness of our framework with a scheduling task example.     

Relationships between the Beck Depression Inventory and the Hamilton Psychiatric Rating Scale for Depression in depressed outpatients

The Beck Depression Inventory (BDI) and the Hamilton Psychiatric Rating Scale for Depression (HRSD) were used with 300 outpatients diagnosed with DSM-III major depression disorders. A principal-components analysis was performed on the intercorrelations among the 21 BDI and 24 HRSD symptoms. Three orthogonal components were found and interpreted as reflecting differences in self-report and clinical rating methods for measuring the severity of depression. The importance of using both self-reports and clinical ratings for evaluating depression in psychiatric outpatients was discussed.     

Evaluating depression severity and remission with a modified Beck Depression Inventory

In an attempt to improve assessment of recovery from depression, a modified Beck Depression Inventory (mBDI) was created that permits endorsement of positive feelings in addition to depressive symptoms. In both normal and clinical samples, the mBDI showed evidence of reliability for measuring varying degrees of depression. In comparison to the original BDI, the mBDI did not significantly improve differentiation in depression severity among depressed individuals and assessment of remission of depressive symptoms. However, the mBDI was significantly better than the original BDI in detecting differences in depression level when overall depression severity was low. Clinical implications for evaluating remission of depression are discussed.     

A study of the psychometric properties of the Beck Depression Inventory‐II,the Montgomery and Åsberg Depression Rating Scale,and the Hospital Anxiety and Depression Scale in a sample from a healthy population

The objective of this study is to evaluate internal consistency and psychometric properties of the Hospital Anxiety and Depression Scale (HADS), the Beck Depression inventory‐II (BDI‐II) and the Montgomery and Åsberg Depression Rating Scale (MADRS) for screening for major depressive episode (MDE) in a selected sample from a healthy population. Participants answered the BDI‐II and the HADS questionnaires and were interviewed with MADRS. The Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders (DSM)‐IV Axis I Disorders‐Clinician Version (SCID‐CV) was used to diagnose MDE. Current MDE was diagnosed in 20 (6%) of the 357 participants. All three scales including the depression sub‐scale for HADS had high area under the receiver operating characteristics curve (ROC) (AUC) (0.84–0.87), and internal consistency was also high for all scales (0.75–0.89). Optimal cut‐off for MDE was ≥ 12 for BDI‐II, MADRS ≥ 8, HADS total ≥ 9, and HADS‐D ≥ 4, which all resulted in sensitivities = 85% and specificities > 78%. Diagnostic accuracy was low on all depression scales (Cohen's kappa = 0.20–0.40). Reports of the properties of depression scales in a healthy population are limited. We found BDI‐II, HADS and MADRS to be acceptable as screening instruments for MDE in a selected sample from healthy population with recommend cut‐offs as mentioned above.     

Rasch analysis of a simplified Beck Depression Inventory

Depression is one of the most clinically relevant mood disorders, and many assessment instruments have been developed to measure it. Probably the most frequently used instrument is Beck’s Depression Inventory (BDI). The simplified BDI (BDI-S) is a more efficient version of the BDI that has been shown to be no less reliable or valid. As the BDI-S has not yet been subjected to rigorous tests of Item Response Theory, it is the aim of the present paper to conduct such an analysis using the Rasch model. This study subjected a simplified version of the BDI consisting of 20 items (BDI-S20) to a Rasch analysis in a sample of N = 5,035 participants. The scale, minus one misfitting item (BDI-S19), yielded a good approximation to Rasch assumptions. Moderate differential item functioning (DIF) was present. It is concluded that the BDI-S19 is an internally valid instrument for assessing depression, although some room for improvement exists.     

The role of fluid and emotional intelligence in malingering

The purpose of the present study was to examine the role of fluid (gf), social (SI) and emotional intelligence (EI) in faking the Beck Depression Inventory (2nd ed., BDI‐II). Twenty‐two students and 26 non‐students completed Raven's Advanced Progressive Matrices (APM), a social insight test, the Schutte et al. self‐report EI scale, and the BDI‐II under honest and faking instructions. Results were consistent with a new model of successful faking, in which a participant's original response must be manipulated into a strategic response, which must match diagnostic criteria. As hypothesised, the BDI‐II could be faked, and gf was not related to faking ability. Counter to expectations, however, SI and EI were not related to faking ability. A second study explored why EI failed to facilitate faking. Forty‐nine students and 50 non‐students completed the EI measure, the Marlowe‐Crown Scale and the Levenson et al. Psychopathy Scale. As hypothesised, EI was negatively correlated with psychopathy, but EI showed no relationship with socially desirable responding. It was concluded that in the first experiment, high‐EI people did fake effectively, but high‐psychopathy people (who had low EI) were also faking effectively, resulting in a distribution that showed no advantage to high EI individuals.     

Measurement of depression: Comparison between self-reports and clinical assessments of depressed outpatients

Agreement among several depression scales was investigated as regard the relative influences of administration mode (self-rating or clinical rating) and scale content. The Beck Depression Inventory (BDI), the Self-Rating Depression Scale (SDS), the Hamilton Rating Scale for Depression (HRSD), and three corresponding scales with identical structure and content but the alternative administration mode were administered to 47 outpatients with diagnoses of DSM-III major depression disorders. Correlations between the total scores and the degrees of association between corresponding items of different scales were calculated. The results suggest that differences in content contribute more to inter-scale discrepancy than differences in administration mode. The implications for the evaluation of outpatients with major depression are discussed.     

Depression in a Cancer Patient Population

The main goal of this study was to examine depression and its components in cancer patients as compared with healthy control subjects and psychiatric inpatients. The participants were 54 cancer patients (28 females with breast cancer, 26 males with prostate cancer), 59 healthy controls (33 females, 26 males), and 75 psychiatric patients (27 females, 48 males). Participants were administered the Beck Depression Inventory (BDI) and the State Trait Personality Inventory (STPI) Depression scales. Cancer patients had higher overall depression scores than did healthy controls as measured by BDI, but the difference was due primarily to the significantly higher scores of the cancer patients on the BDI Somatic–Performance subscale. No differences were found on the BDI Cognitive–Affective subscale. Cancer patients also scored significantly higher than healthy controls on the State-Trait Personality Inventory (STPI) State Depression (S-Dep) scale because of higher Euthymia subscale scores. The psychiatric inpatients scored significantly higher than the other groups on all measures of depression. The findings of this study suggest that cancer patients may be erroneously labeled as depressed because of somatic–performance difficulties they may experience, which are similar to symptoms of depressed individuals. In addition, it is essential to delineate the various components of depression in evaluating cancer patients.     

A logical formalization of the OCC theory of emotions

In this paper, we provide a logical formalization of the emotion triggering process and of its relationship with mental attitudes, as described in Ortony, Clore, and Collins’s theory. We argue that modal logics are particularly adapted to represent agents’ mental attitudes and to reason about them, and use a specific modal logic that we call Logic of Emotions in order to provide logical definitions of all but two of their 22 emotions. While these definitions may be subject to debate, we show that they allow to reason about emotions and to draw interesting conclusions from the theory.