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Temporal productions in a variable environment: timing starts from stimulus identification rather than onset

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Abstract

Timing an interval is integral in everyday life, from crossing a street or boiling an egg to playing sports and chatting with friends. In the current article, participants were asked to produce durations ranging from 500 to 1250 ms by either terminating an automatically initiated duration, or by maintaining a key press. When participants expected this production to start was manipulated using a variable foreperiod. Further, between subjects, the durations required for production were either variable or constant within a block. Together, these manipulations set up a temporally—and event—uncertain environment. When participants both initiated and terminated an interval, the uncertainty of the environment did not systematically affect productions. However, when productions were only terminated, productions were longer and given more uncertainty. While the effects of timing onset could be attributed to when a participant registers a stimulus, the effects of uncertainty with regards to what duration would be required for production indicates that participants appear to register what a stimulus is prior to initiating their timing. This finding indicates that timing may relate to when a stimulus is identified, rather than when it is first perceived. Alternatively, perhaps the onset of timing is postponed by event uncertainty.

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Notes

  1. A between-subjects design was chosen for the manipulation of event expectation because obtaining consistent data across all conditions in a single subject (a) would require excessive time, and (b) could be confusing in cases where participants switched from a set to a variable target production.

  2. Note, in this experiment, the RTs from the presentation of the number to the initiation of the production are also examined. In terms of RTs, participants should show the standard RT effects of the variable foreperiod and multiple possible choices.

  3. Target duration was included to test for possible effects that increase or decrease as the target duration gets longer. If present, these could be indicative of a multiplicative effect of a given factor.

  4. But see (Wehrman, 2020) who did not find a different onset of auditory or visual oddballs in a simultaneity judgment task.

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Correspondence to Jordan Wehrman.

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Appendix: Non-significant ANOVA Tables

Appendix: Non-significant ANOVA Tables

Experiment 1

RTs

Condition

F value

P value

η 2p

Duration Produced

(1,38) = 0.869

0.459

0.02

Duration varied by x Current foreperiod

(1,38) = 0.149

0.701

< 0.01

Duration varied by × Prior foreperiod

(1,38) = 2.20

0.147

0.05

Duration produced × Current foreperiod

(3, 114) = 1.04

0.389 (GG)

0.03

Duration produced × Prior foreperiod

(3,114) = 0.288

0.806 (GG)

0.01

Duration varied by × Duration × Current

(3,114) = 0.233

0.833 (GG)

0.01

Duration varied by × Duration × Prior

(3,114) = 0.690

0.540 (GG)

0.02

Current × Prior × Duration

(3,114) = 0.690

0.560

0.01

Current × Prior × Duration × Duration varied by

(3,114) = 2.11

0.102

0.05

Productions

Condition

F value

P value

η 2p

Duration varied by

(1,38) = 0.105

0.748

0.03

Current foreperiod

(1,38) = 0.252

0.618

0.07

Prior foreperiod

(1,38) = 0.545

0.465

0.01

Duration varied by × Current foreperiod

(1,38) = 1.33

0.257

0.03

Duration varied by × Prior foreperiod

(1,38) = 0.041

0.842

< 0.01

Duration varied by × Duration produced

(3,114) = 0.621

0.524 (GG)

0.02

Current × Prior foreperiods

(1,38) = 0.774

0.384

0.02

Duration produced × Current foreperiod

(3, 114) = 0.580

0.629

0.01

Duration produced × Prior foreperiod

(3,114) = 0.438

0.640 (GG)

0.02

Duration varied by × Current × Prior

(1,38) = 0.688

0.412

0.04

Duration varied by × Duration × Current

(3,114) = 1.62

0.189

0.01

Current × Prior × Duration

(3,114) = 0.179

0.872 (GG)

< 0.01

Current × Prior × Duration × Duration varied by

(3,114) = 0.663

0.554 (GG)

0.02

CVs

Condition

F value

P value

η 2p

Duration produced

(3,114) = 2.57

0.078 (GG)

0.06

Current foreperiod

(1,38) = 2.09

0.147

0.05

Prior foreperiod

(1,38) = 1.57

0.217

0.04

Duration varied by × Current foreperiod

(1,38) = 1.24

0.272

0.03

Duration varied by × Prior foreperiod

(1,38) = 0.815

0.372

0.02

Duration produced × Current foreperiod

(3, 114) = 0.960

0.395 (GG)

0.02

Duration produced × Prior foreperiod

(3,114) = 0.361

0.781

0.01

Duration varied by × Current × Prior

(1,38) = 1.43

0.239

0.04

Duration varied by × Duration × Current

(3,114) = 0.101

0.922 (GG)

< 0.01

Duration varied by × Duration × Prior

(3,114) = 0.460

0.711

0.01

Current × Prior × Duration

(3,114) = 0.974

0.408

0.03

Current × Prior × Duration x Duration varied by

(3,114) = 0.665

0.576

0.02

Experiment 2

Productions

Condition

F value

P value

η 2p

Duration varied by

(1,38) = 0.353

0.556

0.01

Duration varied by × Duration

(3,114) = 0.382

0.696 (GG)

0.01

Duration produced × Current foreperiod

(3, 114) = 1.29

0.292 (GG)

0.03

Duration produced × Prior foreperiod

(3,114) = 1.02

0.358 (GG)

0.03

Duration varied by × Current × Prior

(1,38) = 0.094

0.761

0.02

Duration varied by × Duration × Current

(3,114) = 1.02

0.368 (GG)

0.03

Duration varied by × Prior ×  × Duration

(3,114) = 0.722

0.477 (GG)

0.02

Current × Prior × Duration

(3,114) = 0.553

0.562 (GG)

0.01

Current × Prior × Duration × Duration varied by

(3,114) = 0.276

0.740 (GG)

0.01

CVs

Condition

F value

P value

η 2p

Duration produced

(3,114) = 1.98

0.131 (GG)

0.05

Current foreperiod

(1,38) = 0.101

0.752

< 0.01

Prior foreperiod

(1,38) = 2.90

0.097

0.07

Duration varied by × Current foreperiod

(1,38) = 0.803

0.376

0.02

Duration varied by × Prior foreperiod

(1,38) = 2.86

0.099

0.07

Duration varied by × Duration produced

(3,114) = 2.22

0.100 (GG)

0.06

Current × Prior foreperiods

(1,38) = 0.149

0.702

< 0.01

Duration produced × Current foreperiod

(3, 114) = 1.08

0.354 (GG)

0.03

Duration produced × Prior foreperiod

(3,114) = 1.52

0.221 (GG)

0.04

Duration varied by × Current × Prior

(1,38) = 1.87

0.179

0.05

Duration varied by × Duration × Current

(3,114) = 1.28

0.286

0.03

Duration varied by × Duration × Prior

(3,114) = 0.653

0.545 (GG)

0.02

Current × Prior × Duration

(3,114) = 0.640

0.591

0.02

Current × Prior × Duration × Duration varied by

(3,114) = 0.406

0.749

0.01

Comparison

Productions

Condition

F value

P value

η 2p

Experiment ×  × Duration produced

(3,228) = 1.21

0.522 (GG)

0.02

Duration varied by × Experiment × Prior

(1,76) = 1.63

0.206

0.02

Varied by × Experiment × Duration

(3, 228) = 0.325

0.723 (GG)

< 0.01

Experiment × Current × Duration

(3,228) = 1.41

0.246 (GG)

0.02

Experiment × Prior × Duration

(3,228) = 0.925

0.407 (GG)

0.01

Varied by × Exp × Prior × Current

(1,76) = 0.034

0.854

<0.01

Varied by × Exp × Current × Duration

(3,228) = 1.71

0.175 (GG)

0.02

Varied by × Exp × Prior × Duration

(3,228) = 1.25

0.290 (GG)

0.02

Exp × Current × Prior × Duration

(3,228) = 0.210

0.832 (GG)

< 0.01

Varied by × Exp × Current × Prior × Duration

(3,228) = 0.201

0.839 (GG)

< 0.01

CVs

Condition

F value

P value

η 2p

Experiment × Duration produced

(3,228) = 0.553

0.553

0.01

Experiment × Current

(1,76) = 0.005

0.942

< 0.01

Experiment × Prior

(1,76) = 3.91

0.052

0.05

Varied by × Experiment × Current

(1, 76) = 1.34

0.250

0.02

Varied by × Experiment × Prior

(1,76) = 1.92

0.170

0.02

Varied by × Experiment × Duration

(3, 228) = 2.60

0.053

0.03

Experiment × Current × Prior

(1,76) = 1.98

0.164

0.03

Experiment × Current × Duration

(3,228) = 0.959

0.399 (GG)

0.01

Experiment × Prior × Duration

(3,228) = 1.76

0.166 (GG)

0.02

Varied by × Exp × Prior × Current

(1,76) = 3.16

0.080

0.04

Varied by × Exp × Current × Duration

(3,228) = 1.31

0.275 (GG)

0.02

Varied by × Exp × Prior × Duration

(3,228) = 0.346

0.752 (GG)

< 0.01

Exp × Current × Prior × Duration

(3,228) = 0.319

0.795 (GG)

< 0.01

Varied by × Exp × Current × Prior × Duration

(3,228) = 0.632

0.582 (GG)

0.01

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Wehrman, J. Temporal productions in a variable environment: timing starts from stimulus identification rather than onset. Psychological Research 85, 2792–2807 (2021). https://doi.org/10.1007/s00426-020-01430-0

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  • DOI: https://doi.org/10.1007/s00426-020-01430-0

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