<s>
Coh-Metrix	B-General_Concept
is	O
a	O
computational	O
tool	O
that	O
produces	O
indices	O
of	O
the	O
linguistic	O
and	O
discourse	O
representations	O
of	O
a	O
text	O
.	O
</s>
<s>
Arthur	O
C	O
.	O
Graesser	O
and	O
Danielle	O
S	O
.	O
McNamara	O
,	O
Coh-Metrix	B-General_Concept
analyzes	O
texts	O
on	O
many	O
different	O
features	O
.	O
</s>
<s>
Coh-Metrix	B-General_Concept
can	O
be	O
used	O
in	O
many	O
different	O
ways	O
to	O
investigate	O
the	O
cohesion	O
of	O
the	O
explicit	O
text	O
and	O
the	O
coherence	O
of	O
the	O
mental	O
representation	O
of	O
the	O
text	O
.	O
</s>
<s>
While	O
coherence	O
can	O
be	O
defined	O
as	O
characteristics	O
of	O
the	O
text	O
(	O
i.e.	O
,	O
aspects	O
of	O
cohesion	O
)	O
that	O
are	O
likely	O
to	O
contribute	O
to	O
the	O
coherence	O
of	O
the	O
mental	O
representation	O
,	O
Coh-Metrix	B-General_Concept
measurements	O
provide	O
indices	O
of	O
these	O
cohesion	O
characteristics	O
.	O
</s>
<s>
According	O
to	O
an	O
empirical	O
study	O
,	O
the	O
Coh-Metrix	B-General_Concept
L2	O
Reading	O
Index	O
performs	O
significantly	O
better	O
than	O
traditional	O
readability	O
formulas	O
.	O
</s>
