<s>
Human	B-General_Concept
processor	I-General_Concept
model	I-General_Concept
or	O
MHP	O
(	O
Model	B-General_Concept
Human	I-General_Concept
Processor	I-General_Concept
)	O
is	O
a	O
cognitive	O
modeling	O
method	O
developed	O
by	O
Stuart	O
K	O
.	O
Card	O
,	O
Thomas	O
P	O
.	O
Moran	O
,	O
&	O
Allen	O
Newell	O
(	O
1983	O
)	O
used	O
to	O
calculate	O
how	O
long	O
it	O
takes	O
to	O
perform	O
a	O
certain	O
task	O
.	O
</s>
<s>
Other	O
cognitive	O
modeling	O
methods	O
include	O
parallel	O
design	O
,	O
GOMS	B-General_Concept
,	O
and	O
keystroke-level	B-General_Concept
model	I-General_Concept
(	O
KLM	B-General_Concept
)	O
.	O
</s>
<s>
The	O
value	O
of	O
the	O
human	B-General_Concept
processor	I-General_Concept
model	I-General_Concept
is	O
that	O
it	O
allows	O
a	O
system	O
designer	O
to	O
predict	O
the	O
performance	O
with	O
respect	O
to	O
time	O
it	O
takes	O
a	O
person	O
to	O
complete	O
a	O
task	O
without	O
performing	O
experiments	O
.	O
</s>
<s>
The	O
human	B-General_Concept
processor	I-General_Concept
model	I-General_Concept
uses	O
the	O
cognitive	O
,	O
perceptual	O
,	O
and	O
motor	O
processors	O
along	O
with	O
the	O
visual	O
image	O
,	O
working	O
memory	O
,	O
and	O
long	O
term	O
memory	O
storages	O
.	O
</s>
