Frequently Asked Questions
We have learned of a few issues affecting use of the MCCB Computer
1. Calculation of age: For the initial version of the MCCB
computer scoring program, we identified a minor error in the
calculation of age from the respondent's birth date. Under
certain circumstances, the calculated age may be off by one year.
If this is the version you are working with you can bypass this problem
by entering the respondent's age in years directly on the screen titled
"Respondent Registry" and leave the field for birth date blank.
This issue has been corrected in the later versions of the MCCB scoring
program that are available by contacting the test distributor that
provided the initial program.
2. Date formatting: Date formatting varies from country to
country. The initial version of the MCCB computer scoring program
required users to enter dates according to the U.S. format
(mm/dd/yyyy); but other countries format dates in the following way
(dd/mm/yyyy). Later versions of the MCCB scoring program have
corrected this problem by providing drop-down calendars for entry of
dates. The later versions of the MCCB scoring program are
available by contacting the test distributor that provided the initial
3. Input of raw scores from data files: The initial version
of the MCCB computer scoring program did not include an option to input
raw data files for a group of subjects to compute T-scores. For
the initial version, each subject's raw scores needed to be entered
directly into the scoring program. Subsequent versions of the
scoring program now include an IMPORT function option to input data
files in a specified format to obtain T-scores for groups of
subjects. Examples are available here: Pre-formatted Respondent
4. Windows compatibility: The computer-based programs in the
initial version of the MCCB do not install properly under Microsoft
operating systems developed after Windows XP. Subsequent versions
have been modified to allow installation with Windows Vista and Windows
7 operating systems.
5. Information on administration security
for use of CPT-IP in Clinical Trials is available here: CPT-IP in Clinical Trials.
6. CD Installation Instructions are
available here: Installation
7. MSCEIT Branch 4 scoring program patch for
use outside of the U.S. Installation instructions and patch are
available here: Installation
and Patch Zip File.
8. Scoring and Handling of Missing Data on
the MCCB: In the MCCB Manual, we provide recommendations for how
to handle missing data involving the MCCB in Chapter 6 (Scoring) and in
Appendix B . We list four factors to be considered for imputing
values for missing data (test, respondent, treatment, and
time). We realize that for certain clinical trials, it is
not feasible to unblind treatment for the purpose of deriving imputed
score values for missing data. Hence, for blinded clinical trials
in which unblinding for imputation is not feasible or is undesirable,
we recommend that imputation procedures include the other three factors
and omit treatment. Using this option will produce appropriate
imputed scores for clinical trials, but may yield a conservative
estimate of positive or negative treatment effects.