I__. - International Military Testing Association

CORCAS - The CORCAS report characterizes task clusters selected by the analyst for
further evaluation in terms of the people who most perform it, and especially those principal
performers whose jobs are concentrated in this task cluster to the exclusion of all or most
other task clusters. The CORCAS report may contain any type of background variable
information describing a case that will fit in the allocated space, just as on a PRTVAR
report; however, “base of assignment” and “job title” are often the most useful variables. An
example is shown in Figure 3 below.
CO RCAS CORE CASES FOR TASK MODULES
Summary Statistics for Target Module ST0046
CSOOOI Slap 41: PSOOOl 435 to 437
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Description Value Description Value
Number of tasks in target module 3 Average number of tasks performed by all cases .OS
Number of core cases in target module 11 Average number of tasks performed by core cases 1.82
Percent of module time covered by core cases ,~ 70.11 Average percent time spent in module by all cases .OS
Core case homogeneity index (CCMI) 35.48 Avcragc percent time spent in module by core cases 1.29
Co-performance Task Title
22.81 G 208 Evaluate water survival performances of students not wearing pressure suit assemblies
18.40 K 302 Perform minor repairs of life rafts, such as patching or replacing spray shields
27.88 K 319 Store life rafts
Case Level Statistics for Target Module STOW5 (n = 3)
Core Cases Sorted on Average Task Importance Values
Sorted
Avcrap Number Percent Percent
Number Task of Core of Tasks Time in Performance
KPATII Grade DAI’SC Supvsd. Base Job Title Importance Modules Performed Module Emphasis
146 Es 91150 05 Mather NCOIC Admin 78.52 9 100.00 1.99 117.24
41 I3 91150 ocl Mather Arspc Physlgy 59.71 15 66.67 1.30 67.49
40 I3 91130 02 Mather Ar. Phy. Spec 56.38 7 66.67 1.65 58.84
13 I35 91170 01 Brooks Supv Aero Phy 53.47 26 100.00 54 54.08
202 E3 91150 00 Mather Arspc Phy Spec 52.78 5 66.67 1.22 19.51
139 Es 91150 04 Mather Asst NCOIC Acad. 42.52 9 66.67 1.40 40.07
Figure 3. Example CORCAS Report Showing Types of Data Which Can Be Displayed
This example illustrates how the program can be useful in interpreting task clusters; in this
case note that almost all cases are individuals assigned to Mather AFB, CA, where the Air
Force conducts its navigator training, By assessing these data in conjunction with the three
tasks in the module, an analyst can begin to make sense out of the tentative task module.
The CORCAS report makes it apparent that the three tasks are co-performed because they
are all a part of the navigator training course at Mather AFB. Note also that the KPATH
number for each case is also shown; this means that by crossmapping KPATH sequences and
analyst-assigned job type names, we could also display the job type for each member (but
would have to sacrifice some other data in order to have room in the display). We have
done this experimentally and found it very useful; in some cases, it leads the analyst to
reconsider the job type names initially assigned.
CASSET - Whereas CORCAS characterizes a task cluster (module) in terms of those cases
whose jobs are most representative of the task module, the CASSET program generates
displays of cases whose jobs are most representative of the job types (group of cases) within
a given set of job clusters. This approach permits an analyst to quickly characterize a job
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