**6. Principal interviews and tests available for the assessment of bariatric candidates**

There is an availability of templates for conducting interviews that help clinicians to assess the domains of interest.

• The Weight and Lifestyle Inventory [14] is designed to assess the eating and physical activity habits, the psychological status and the presence of stressful life events.

*Psychological Considerations for Bariatric Surgery DOI: http://dx.doi.org/10.5772/intechopen.94450*

• The Boston Interview [15] aims to assess weight, diet, and nutrition history, dysfunctional eating, medical condition, understanding of surgical procedures, concerns and benefits, motivation for surgery, interpersonal functioning, and psychiatric conditions.

While clinical interviews are widely used in clinical settings, only a few clinics employ some forms of objective tests. The use of psychological instruments allows clinicians to collect more information, in a rapid but precise validated and empirical way than clinical interviews alone. Some broadband instruments provide a broad assessment of patients, across several psychological domains, including emotional, cognitive and behavioral ones. Unfortunately, broadband instruments cannot provide information about specific content areas, such as eating disorders, and require costs for administration. To overcome these limitations, clinicians can administer narrowband instruments that provide a good solution to assess specific domains. In addition, narrowband instruments are more feasible and can be administered quickly. Below is the description of the most frequently used broadband and narrowband instruments for the psychological evaluation of bariatric candidates.


Below, a table to describe the most widely used tests is presented in **Table 1**.



#### *Psychological Considerations for Bariatric Surgery DOI: http://dx.doi.org/10.5772/intechopen.94450*

*Questionnaire; QEWP: Questionnaire of Eating and Weight Patterns–Revised; TFEQ: The Three-Factor Eating Questionnaire; BES: Binge Eating Scale; NEQ: Night eating Questionnaire; BDI-III: Beck Depression inventory; BAI: Beck Anxiety Inventory; PHQ-9: The Patient Health Questionnaire-9; CES-D: Center for Epidemiologic Studies Depression Scale; MDQ: Mood Disorders Questionnaire; GAD-7: Generalized Anxiety Disorder-7; AUDIT: Alcohol Use Disorders Identification Test; MAST: Michigan Alcoholism Screening Test; SASSI-3: Substance Abuse Subtle Screening Inventory-3; IWQOL: Impact of Weight on Quality of Life; MMSE: Mini-Mental State Evaluation; MBHI: Millon Behavioral Health Inventory.*

#### **Table 1.**

*Principal used psychometric instruments for the assessment of bariatric candidates.*
