This worksheet was developed by Sarah Wiseman and Sandy Gould to be used in conjunction with Errordiary and teaching people about the psychology of human error. Please visit www.errordiary.org for more information.

1.
Classifying
# errordiary
Populate
the
table
below
with
examples
from
http://errordiary.org
Error
Type
Errordiary
example
Capture
(Automatic
activation
of
a
well-­‐
learned
routine
that
overrides
the
current
intended
activity)
Double
Capture
(The
unintended
activation
of
a
related
strong
action
schema)
Omission
(Due
to
interruptions)
Loss
of
Activation
(Schemas
that
have
been
activated
lose
activation)
Description
Slip
(Incomplete
or
ambiguous
specification
of
intention
that
is
similar
to
a
familiar
intention)
Associative
Activation
Slip
(Activation
of
similar
but
incorrect
schemas)
Perceptual
Confusion
Slip
Repetition
of
Action
Slip
(Repetition
of
an
correctly
performed
action)
Cross-­‐talk
Slip
(concurrent)
(Action
components
are
exchanged
between
two
or
more
concurrent
actions)
Cross-­‐talk
Slip
(sequential)
(Action
components
are
exchanged
between
two
or
more
sequential
actions)