Mini-Mental Adjustment to Cancer Scale [Mini-MAC-29]

Scale Description

The Mini-Mental Adjustment to Cancer Scale (Mini-MAC-29) is a self-report psychometric instrument designed to assess the cognitive, emotional, and behavioral strategies individuals use to cope with and psychologically adjust to cancer.

Developed by Watson and colleagues (1994), the Mini-MAC is a shorter and further developed version of the original Mental Adjustment to Cancer (MAC) Scale. It was designed to provide a practical and multidimensional assessment of psychological responses to cancer while reducing respondent burden.

The scale consists of 29 items organized into five major dimensions:

Helplessness/Hopelessness: reflects feelings of powerlessness, pessimism, and limited perceived control in relation to cancer.

Anxious Preoccupation: refers to persistent worry, fear, and heightened concern regarding the disease, its progression, and its potential consequences.

Cognitive Avoidance: describes the tendency to avoid or distance oneself from thoughts, information, or concerns associated with cancer.

Fighting Spirit: reflects a more active and determined approach toward coping with the disease and managing its associated challenges.

Fatalism: represents a more accepting or fatalistic orientation toward cancer and its course.

Together, these dimensions provide a multidimensional profile of the ways in which individuals psychologically respond to the experience of cancer.

Objective

The primary objective of the Mini-MAC-29 is the systematic assessment of psychological adjustment and coping strategies in individuals with cancer.

The instrument enables researchers and healthcare professionals to investigate how patients perceive and manage the psychological demands associated with diagnosis, treatment, and the course of the disease.

Its dimensions may also be examined in relation to psychological and health-related variables such as anxiety, depression, emotional distress, quality of life, social support, and sociodemographic or clinical characteristics.

The Mini-MAC can therefore contribute to a more comprehensive understanding of patients’ psychosocial needs and the different patterns of adjustment that may emerge throughout the cancer experience.

Scoring

The Mini-MAC consists of 29 statements, which are rated using a four-point Likert-type scale.

Responses range from:

1 – Definitely does not apply to me
to
4 – Definitely applies to me

Items are scored according to the official scoring key, and separate scores are calculated for each of the five dimensions.

Higher scores on a particular subscale indicate a greater presence or stronger endorsement of the corresponding coping strategy.

A single overall score should not generally be interpreted as representing “good” or “poor” psychological adjustment. Interpretation is primarily based on the individual subscale scores and should take into consideration the specific research or clinical context.

Data Analysis

Statistical analysis of Mini-MAC-29 data may include the calculation of individual subscale scores and descriptive statistics such as means, standard deviations, medians, and ranges.

The internal consistency of each dimension can be evaluated using reliability coefficients such as Cronbach’s alpha or McDonald’s omega. Exploratory factor analysis (EFA) or confirmatory factor analysis (CFA) may also be employed to investigate or confirm the underlying factor structure of the instrument.

Depending on the research questions, correlation analyses, group comparisons, regression models, and other multivariate statistical techniques may be used to investigate associations between coping strategies and psychological, sociodemographic, or clinical variables.

In longitudinal and intervention studies, the Mini-MAC may also be used to examine changes in coping and psychological adjustment across different stages of treatment or at different assessment points.

Validity and Reliability

The Mini-MAC has been investigated for its psychometric properties in different cancer populations and cultural settings. Research generally supports its usefulness for distinguishing between different patterns of psychological adjustment, although the precise factor structure and reliability of individual dimensions may vary across populations and translated versions.

Of particular relevance to its use in Greece is the study by Anagnostopoulos et al. (2006) involving Greek women with breast cancer, which examined the construct validity and psychometric characteristics of the Greek version of the Mini-MAC.

When the scale is applied to a new population or cultural context, researchers should evaluate the reliability of the individual subscales and, where appropriate, examine whether the proposed factor structure is adequately supported.

Applications

The Mini-MAC-29 is primarily used in psycho-oncology, health psychology, behavioral medicine, and cancer-related quality-of-life research.

It can be used to investigate individual differences in coping with cancer, explore relationships between coping strategies and psychological distress, and examine how patterns of adjustment may change throughout treatment and survivorship.

The instrument may also contribute to research evaluating psychosocial interventions designed to support individuals living with cancer.

The Mini-MAC-29 is a psychometric assessment instrument rather than a stand-alone diagnostic tool. Its results should therefore be interpreted within the broader psychological, clinical, social, and cultural context of the individual.

References

Watson, M., Law, M. G., dos Santos, M., Greer, S., Baruch, J., & Bliss, J. (1994). The Mini-MAC: Further development of the Mental Adjustment to Cancer Scale. Journal of Psychosocial Oncology, 12(3), 33–46.

Anagnostopoulos, F., Kolokotroni, P., Spanea, E., & Chryssochoou, M. (2006). The Mini-Mental Adjustment to Cancer (Mini-MAC) scale: Construct validation with a Greek sample of breast cancer patients. Psycho-Oncology, 15(1), 79–89.

Watson, M., Greer, S., Young, J., Inayat, Q., Burgess, C., & Robertson, B. (1988). Development of a questionnaire measure of adjustment to cancer: The MAC scale. Psychological Medicine, 18(1), 203–209.

Greer, S., Moorey, S., & Watson, M. (1989). Patients’ adjustment to cancer: The Mental Adjustment to Cancer (MAC) scale vs clinical ratings. Journal of Psychosomatic Research, 33(3), 373–377.