Description Usage Arguments Details Value Author(s) Examples
Specification of lba models with explanatory variables on the parameters. Models are fitted using full information maximum likelihood.
1 |
rt |
A vector of response times. |
resp |
A vector of (binary) responses. |
... |
Not currently used. |
The startlba
function returns a named vector with starting values
for the (intercepts) of the parameter models. Currently defined as: the
standard deviation of the RTs is used as the standard deviation of the
drift rate; the drift rate for the correct responses is initialized as the
mean accuracy; the non-decision parameter is set to half the minimum of the
response times; the start point parameter is set to drift*(qrt2-nond) where
drift is the drift rate, qrt2 the second quartile of the RT distribution,
and nond is the non-decision time; the bound is set to drift*(qrt4-nond)
where qrt4 is the fourth value of quartiles of the RT distribution.
The startlba
function returns a named vector with starting values
for the (intercepts) of the parameter models.
Ingmar Visser
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