|
Mentally Retarded Behavioral Profile
| While Syrotuck had mentioned mentally retarded
behavior, he did not have a large enough database to create meaningful
statistics. The mentally retarded profile accounts for 3% of
Virginia's reported last person cases. It proved to be a unique blend of
both the Alzheimer's and lost children's profiles. Mentally retarded
children tend to act more like age adjusted children, while adults tended
to act more like the Alzheimer's profile. |
|
Descriptive Statistics
| Statistic |
Retarded |
Psychotic |
Despondent |
Alzheimer's |
| n (# cases) |
29 |
25 |
65 |
87 |
| Age (SD) |
30 (3) |
43 (16) |
37 (16%) |
76 (9) |
| Males |
60% |
63% |
76% |
67% |
| Females |
40% |
37% |
24% |
33% |
| Uninjured |
85% |
72% |
34% |
51% |
| Injured |
11% |
5% |
11% |
27% |
| Deceased |
4% |
22% |
55% |
22% |
| Investigative |
11% |
5% |
10% |
8% (25% in urban |
Distance from
the PLS (Mental Retardation)
| Distance from the PLS |
Miles |
Kilometers |
| Mean |
0.9 |
1.4 |
| S.D. |
1.2 |
1.9 |
| Median |
0.5 |
0.8 |
| Range |
0-4.9 |
0-7.7 |
| 25% |
0.1 |
0.2 |
| 50% |
0.5 |
0.8 |
| 75% |
1.0 |
1.6 |
| Max Zone |
2.5 (95%) |
4.0 (95%) |
Find Location
| Location |
Retarded |
Psychotics |
Despondent |
Alzheimer's |
| Structure |
21% |
23% |
18% |
15% |
| Yard (field) |
16% |
- |
3% |
18% |
| Drainage |
21% |
7% |
10% |
18% |
| Woods |
16% |
30% |
21% |
7% |
| Brush/Briar |
11% |
7% |
3% |
29% |
| Road |
11% |
23% |
4% |
7% |
| Linear |
5% |
- |
13% |
- |
| Other |
- |
- |
18% water 5% cliff |
4% |
Behavioral Profile
- Blend of both Children and Alzheimer's profiles
- Shape of distance traveled from IPP curve similar to Alzheimer's with
slight expansion of distances
- Good survivability rates (96%)
- 97% will not respond to their name
- 17% also had some physical impairments
- Subjects did not travel to identifiable targets
- Often found in structure (21%) or yards (16%)
- Will travel into brush/briars, usually to seek shelter. Greater
penetration of woods.
- Elderly mentally retarded more similar to Alzheimer's
- None lost taking short cuts (common child strategy)
- Median distance from IPP 0.5 miles (0.8 km)
- Max zone (95%) 2.5 miles (4.0km)
Initial Reflex tasks
- Early use of trackers at initial planning point (IPP)
- Early use of tracking/trailing dogs at IPP
- Through systematic search of residence and local yards
- Early deployment of air-scent dog teams into woods and drainage's, start
near IPP
- Cur for sign along roadways and trials
- Consider family to shout name (after tracking/trailing dogs)
- Search brush/briars; remind field team leaders of importance
- Subject may flee or move. Areas will need to be researched with continual
importance of looking for sign
- Search urgency high
- After initial reflex tasks search should expand outward from IPP.
Study Methods
The database used to collect this data has been described in a previous paper
on Alzheimer's. The following
modifications were made. Inclusion criteria: Following terms
appeared on missing person record; mental retardation, Downs syndrome, mental
age of x. Exclusion criteria: Primary psychotic disorder, dementia,
accidents, homicide, or abduction.
| Alzheimer's
| Retardation | Psychotic
| Despondent | VASARCO
| Fatigue | Map
| Latest | |
