@article{OberauerKliegl2004,
  author    = {Oberauer, Klaus and Kliegl, Reinhold},
  title     = {Simultaneous cognitive operations in working memory after dual-task practice},
  issn      = {0096-1523},
  year      = {2004},
  abstract  = {The authors tested the hypothesis that with adequate practice, people can execute 2 cognitive operations in working memory simultaneously. In Experiment 1, 6 students practiced updating 2 items in working memory through 2 sequences of operations (1 numerical, 1 spatial). In different blocks, imperative stimuli for the 2 sequences of operations were presented either simultaneously or sequentially. Initially, most participants experienced substantial dual-task costs. After 24 sessions of practice, operation latencies for simultaneous presentation were equal to the maximum of times for the 2 operations in the sequential condition, suggesting perfect timesharing. Experiment 2 showed that a reduction of dual-task costs requires practice on the combination of the 2 updating tasks, not just practice on each individual task. Hence, the reduction of dual-task costs cannot be explained by shortening or automatization of individual operations},
  language  = {en}
}
@article{EngbertKlieglLongtin2004,
  author    = {Engbert, Ralf and Kliegl, Reinhold and Longtin, Andre},
  title     = {Complexity of eye movements in reading},
  year      = {2004},
  abstract  = {During reading, our eyes perform complicated sequences of fixations on words. Stochastic models of eye movement control suggest that this seemingly erratic behaviour can be attributed to noise in the oculomotor system and random fluctuations in lexical processing. Here, we present a qualitative analysis of a recently published dynamical model [Engbert et al., 2002] and propose that deterministic nonlinear control accounts for much of the observed complexity of eye movement patterns during reading. Based on a symbolic coding technique we analyze robust statistical features of simulated fixation sequences},
  language  = {en}
}
@article{RolfsEngbertKliegl2004,
  author    = {Rolfs, Martin and Engbert, Ralf and Kliegl, Reinhold},
  title     = {Microsaccade orientation supports attentional enhancement opposite to a peripheral cue},
  year      = {2004},
  language  = {en}
}
@article{KlieglGrabnerRolfsetal.2004,
  author    = {Kliegl, Reinhold and Grabner, Ellen and Rolfs, Martin and Engbert, Ralf},
  title     = {Length, frequency, and predictability effects of words on eye movements in reading},
  year      = {2004},
  language  = {en}
}