Beck Anxiety Inventory | |
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Synonyms | Stress (biology), Psychological stress, Acute stress reaction |
Purpose | Psychological evaluation, Psychiatric assessment, self-report inventory, rating scale, ordinal scale, Likert scale, questionnaire, scale (social sciences) |
Test of | Psychopathology, Anxiety, Fear, Worry |
Based on | Anxiety Checklist, Physician's Desk Reference Checklist, Situational Anxiety Checklist |
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The Beck Anxiety Inventory (BAI) is a formative assessment and rating scale of anxiety. This self-report inventory, or 21-item questionnaire uses a scale (social sciences); the BAI is an ordinal scale; more specifically, a Likert scale that measures the scale quality of magnitude of anxiety. [1]
Aaron T. Beck et al. (1988) combined three separate anxiety questionnaires, with 86 original items, to derive the BAI: the Anxiety Checklist, the Physician's Desk Reference Checklist, and the Situational Anxiety Checklist. [2] The BAI is used for measuring the severity of anxiety in adolescents and adults ages 17 and older. [3] [4] The questions used in this measure ask about common symptoms of anxiety that the subject has had during the past week (including the day you take it) (such as numbness and tingling, sweating not due to heat, and fear of the worst happening). It is designed for individuals who are of 17 years of age or older and takes 5 to 10 minutes to complete. Several studies have found the Beck Anxiety Inventory to be an accurate measure of anxiety symptoms in children and adults. [3] [5]
In addition, the BAI was moderately correlated with the revised Hamilton Anxiety Rating Scale [...] and was only mildly correlated with the revised Hamilton Depression Rating Scale [6]
— Beck et al.
The BAI contains 21 questions, each answer being scored on a scale value of 0 ("Not at all") to 3 ("Severely--I could barely stand it"). [7] Higher total scores indicate more severe anxiety symptoms. The standardized cutoffs are:
The BAI has been criticized for its predominant focus on physical symptoms of anxiety (most akin to a panic response). As such, it is often paired with the Penn State Worry Questionnaire, which provides a more accurate assessment of the cognitive components of anxiety (i.e., worry, catastrophizing, etc.) commonly seen in generalized anxiety disorder.
Though anxiety can be thought of as having several components, including cognitive, somatic, affective, and behavioral components, Beck et al. included only two components in the BAI's original proposal: cognitive and somatic. [4] The cognitive subscale provides a measure of fearful thoughts and impaired cognitive functioning, and the somatic subscale measures the symptoms of physiological arousal. [8]
Since the introduction of the BAI, other factor structures have been implemented, including a four factor structure used by Beck and Steer with anxious outpatients that included neurophysiological, autonomic symptoms, subjective, and panic components of anxiety. [9] In 1993, Beck, Steer, and Beck used a three factor structure including subjective, somatic, and panic subscale scores to differentiate among a sample of clinically anxious outpatients [10]
Because the somatic subscale is emphasized on the BAI, with 15 out of 21 items measuring physiological symptoms, perhaps the cognitive, affective, and behavioral components of anxiety are being deemphasized. Therefore, the BAI functions more adequately in anxiety disorders with a high somatic component, such as panic disorder. On the other hand, the BAI won't function as adequately for disorders such as social phobia or obsessive-compulsive disorder, which have a stronger cognitive or behavioral component. [11]
The final subsample (n = 160), on which extensive validation of the final BAI was carried out, was made up of groups with primary diagnoses of major depressive disorder (n = 40); dysthymic disorder and atypical depression (n = 11); panic disorder (n = 45); generalized anxiety disorder (n = 18); agoraphobia with panic attacks (n = 18); social and simple phobia (n = 12); and miscellaneous nonanxiety, nondepression disorders such as academic problems and adjustment disorders (n = 16). [12]
— Beck et al.
The BAI was specifically designed as "an inventory for measuring clinical anxiety" that minimizes the overlap between depression and anxiety scales. [4] While several studies have shown that anxiety measures, including the State-Trait Anxiety Inventory (STAI), are either highly correlated or indistinguishable from depression, [13] [14] [15] the BAI is shown to be less contaminated by depressive content. [4] [16] [17] [18] [19] [20] [21] [22] [23] [ excessive citations ]
Since the BAI only questions symptoms occurring over the last week, it is not a measure of trait anxiety or state anxiety. The BAI can be described as a measure of "prolonged state anxiety", which, in a clinical setting, is an important assessment. A version of the BAI, the Beck Anxiety Inventory-Trait (BAIT), was developed in 2008 to assess trait anxiety rather than immediate or prolonged state anxiety, much like the STAI. However, unlike the STAI, the BAIT was developed to minimize the overlap between anxiety and depression. [24]
A 1999 review found that the BAI was the third most used research measure of anxiety, behind the STAI and the Fear Survey Schedule, [25] which provides quantitative information about how clients react to possible sources of maladaptive emotional reactions.
The BAI has been used in a variety of different patient groups, including adolescents. Though support exists for using the BAI with high-school students and psychiatric inpatient samples of ages 14 to 18 years, [26] the recently developed diagnostic tool, Beck Youth Inventories, Second Edition, contains an anxiety inventory of 20 questions specifically designed for children and adolescents ages 7 to 18 years old. [27]
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Three samples of [1,086] psychiatric outpatients [456 men, mean age 36.35; and 630 women, mean age 35.69] [...] at the Center for Cognitive Therapy in Philadelphia, Pennsylvania, from [1980 to 1986.] [...] The resulting Beck Anxiety Inventory (BAI) is a 21-item scale that showed high internal consistency (a = .92) and test-retest reliability over 1 week, r(81) = .75 [28]
— Beck et al.
Though the BAI was developed to minimize its overlap with the depression scale as measured by the Beck Depression Inventory, a correlation of r=.66 (p<.01) between the BAI and BDI-II was seen among psychiatric outpatients, [29] suggesting that the BAI and the BDI-II equally discriminate between anxiety and depression. [30]
Another study indicates that, in primary care patients with different anxiety disorders including social phobia, panic disorder, panic disorder with or without agoraphobia, agoraphobia, or generalized anxiety disorder, the BAI seemed to measure the severity of depression. This suggests that perhaps the BAI cannot adequately differentiate between depression and anxiety in a primary care population. [31]
In a study examining the BAI's use on older adults with generalized anxiety disorder, no discriminant validity was seen between the BAI and measures of depression. This could perhaps be due to the increased difficulty in discriminating between anxiety and depression in older adults due to "de-differentiation" of the symptoms of anxiety with the aging process, as hypothesized by Krasucki et al. [32]
Many questions of the Beck Anxiety Inventory include physiological symptoms, such as palpitations, indigestion, and trouble breathing. [33] Because of this, it has been shown to elevate anxiety measures in those with physical illnesses like postural orthostatic tachycardia syndrome, when the Anxiety Sensitivity Index did not. [34]
Finally, the mean and median reliability estimates of the BAI tend to be lower when given to a nonpsychiatric population, such as college students, than when given to a psychiatric population. [35] [36]
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The final scale consists of 21 items, each describing a common symptom of anxiety [...] over the past week on a 4-point scale ranging from 0 (Not at all) to 3 (Severely--I could barely stand it). The items are summed to obtain a total score that can range from 0 to 63