Law of Practice Survey

 

Law of Practice Survey

Introduction

The data set made available here, are the 17 published and un-averaged data sets examined in Heathcote, Mewhort, and Brown (2000). Please refer to the relevant papers for full details of how the data was collected, and to Heathcote et al. (2000) for the basis on which they were collated. The data sets made available here contain only the data for correct trials that was used in the Heathcote et al. (2000) analyses.

Please contact the Contributers of the data via email, should you require the full data set or other relevant information.

 

Contributer Datasets
Note: All in zip format
Email
David Strayer s1 s2 s3 Email
Tim Rickard m1 m2 m3 Email
Andrew Heathcote v1 v3 Email
Lynne M. Reder m3 m4 m5 Email
Thomas Palmeri c1 c2 c3 Email
Marisa Carrasco v2 Email
Willem B. Verwey k1 k2 Email

 

If you wish to archive your practice data set on this site, or if you experience any problems with this site, please contact us.

Please Note:
All trials sequentially numbered across conditions rather than numbered within conditions (except where noted otherwise). Refer to Heathcote et al. (2000) for details of how condition factors were constructed.

 

Un-averaged Data Sets

 

Label Brief Reference Experiment
m1 Rickard & Bourne (1996) "OPER" Experiment
m2 Rickard (1997) "CPL" Experiment
m3 Reder & Ritter (1992) Experiment 1
m4 As for m3 Experiment 2
m5 Schunn, Reder, Nhouyvanisvong, Richards & Stroffolino (1997) Experiment 1, using only stimuli presented 28 times.
s1 Strayer & Kramer (1994a) Consistently mapped trials from mixed consistent/varied mapping training blocks from Experiment 2
s2 Strayer & Kramer (1994; 1994b) Consistently mapped training blocks from Experiment 2 of (1994a), and Experiments 4, 6 and 7 from (1994b) and an unpublished two-alternative forced-choice version of the task
s2.dat
s3 Strayer & Kramer (1994c) Consistently mapped trials (young subjects)
v1 Heathcote & Mewhort (1993) Experiment 1
v2 Carrasco, Ponte, Rechea & Sampedro (1998)
v3 As for v1 Experiments 3 and 4
v3.dat
k1 Verwey (1996) Time to press each key taken seperately - day 1 session only
k1.dat
k2 As for k1 Time to press each key taken seperately - day 1 session omitted due to non-stationary errors
k2.dat
c1 Palmeri (1997) Experiment 1
c2 As for c1 Experiment 2
c3 As for c1 Experiment 3
a1 As for m2 Alphabet Arthmetic task

 

Important Please Note: All Data Sets are zip format unless stated otherwise.

 

Brief Description of Data Sets

 

Label Data Sets with a Single Factor Column
Brief Description
Label Data Sets with more than one Factor Column
Brief Description
a1 Subjects: 21
Factor Levels: 24
84 blocks of 24 trials (2016 trials total)
s1 Subjects: 6
Factors: 
C01: set size, 3 levels,
C02: target present/absent, 2 levels
4320 trials, 144 trials/block, 30 blocks
c1 Subjects: 4
Factor Levels: 30
208 blocks of 30 trials (6240 trials total)
s2 Subjects: 32
Factors: 
C01: set size, 3 levels, 
C02: target present/absent, 2 levels
4320 trials, 144 trials/block, 30 blocks
c2 Subjects: 4
Factor Levels: 72
160 blocks of 72 trials (11520 trials total)
s3 Subjects: 20
Factors: 
C01: set size, 3 levels,
C02: target present/absent, 2 levels
5184 trials, 72 trials/block, 30 blocks
c3 Subjects: 5
Factor Levels: 72 x 2
160 blocks of 72 trials (11520 trials total)
v1 Subjects: 24
Factors: 
C01: display size, 4 levels, 
C02: target present/absent, 2 levels
1600 trials, 80 trials/block, 20 blocks
k1 Subjects: 36
Factor Levels: 2
840 trials, levels blocked and interleaved.
Level 2: Trials 91-120, 331-360, 571-600, 811-840 (except S34, 211-240, 451-480, 601-720)
Level 1. All other trials.
v2 Subjects: 10
Factors: 
C01: target present/absent, 2 levels,
C02: display size, 6 levels
1008 trials.
k2 Subjects: 36
Factor Levels: 2
1800 trials (S34: 1920): Numbered 841-2640 (S34: 2760),
Level 2: 7 Blocks of 30 = 210 trials in total, begining at trials 1051, 1291, 1531, 1891, 2131, 2371, 2611, except for S34 begining at 941, 1081, 1181, 1421, 1661, 2021, 2261, 2501, 2741 (8 Blocks of 30 = 240 trials)
Level 1: 1450 trials (S34 1680)
v3 Subjects: 16 (2 groups of 8, first column defines group (varied mapping or “odd-man-out” search), the second column defines subjects within group, 1..8.)
Factors: 
C01: display size, 4 levels,
C02: target type, 2 levels, 
C03: target present/absent, 2 levels.2560 (one 2880) trials, 80 trials/block, 32 (one has 36) blocks
m1 Subjects. 24
Factor Levels: 24
90 trials/level (separately numbered).
m2 Subjects. 19
Factor Levels: 12
1080 trials.
m3 Subjects. 20
Factor Levels: 4
20 trials/level (separately numbered).
m4 Subjects. 16
Factor Levels: 4
20 trials/level (separately numbered).
m5 Subjects. 22
Factor Levels: 3
28 trials/level (separately numbered)

 

Important Please Note: All Data Sets are zip format.

 

References

1. Carrasco, M., Ponte, D., Rechea, C., & Sampedro, M. J. (1998). Transient Structures. Perception & Psychophysics, 60, 1243-1258.

2. Heathcote, A., Brown, S., & Mewhort, D. J. K. (2000). The Power Law repealed: The case for an Exponential Law of Practice. Psychonomic Bulletin & Review, 7, 185-207.

3. Heathcote, A., & Mewhort, D. J. K. (1993). Selection and representation of relative position. Journal of Experimental Psychology: Human Perception & Performance, 19, 448-515.

4. Palmeri, T. J. (1997). Exemplar similarity and the development of automaticity. Journal of Experimental Psychology: Learning Memory & Cognition, 23, 324-354.

5. Rickard, T. C. & Bourne, L. E. (1996). Some tests of an identical elements model of basic arithmetic skills. Journal of Experimental Psychology: Learning Memory & Cognition, 22, 1281-1295.

6. Rickard, T. C. (1997). Bending the Power law: A CMPL theory of strategy shifts and the automatization of cognitive skills. Journal of Experimental Psychology: General, 126, 288-311

7. Reder, L. M. & Ritter, F. E. (1992). What determines initial feeling of knowing? Journal of Experimental Psychology: Learning Memory & Cognition, 18, 435-451.

8. Schunn, C. D., Reder, L. M., Nhouyvanisvong, A., Richards, D. R. & Stroffolino, P. J. (1997). To calculate or not calculate. Journal of Experimental Psychology: Learning Memory & Cognition, 12, 1-27.

9. Strayer, D. L., & Kramer, A. F. (1994a). Strategies and automaticity I. Journal of Experimental Psychology: Learning Memory & Cognition, 20, 318-341.

10. Strayer, D. L., & Kramer, A. F. (1994b). Strategies and automaticity II. Journal of Experimental Psychology: Learning Memory & Cognition, 20, 342-365.

11. Strayer, D. L., & Kramer, A. F. (1994c). Aging and skill acquisition. Psychology & Aging, 9, 589-605.

12. Verwey, W.B. (1996). Buffer loading and chunking in sequential keypressing. Journal of Experimental Psychology: Human Perception & Performance, 22, 544-562.