Children's Use of Arithmetic Shortcuts: The Role of Attitudes in Strategy Choice

Table 1

Accuracy (%), solution latencies, and proportion of cutoffs (%) in the pretest, first posttest, and second posttest on inversion and associativity problems.

	Session
	1	2	3
Accuracy	Inversion
Shortcut	98.3 (2.1)	99.4 (1.7)	98.8 (2.1)
Algorithm	40.8 (2.2)	42.0 (3.0)	56.9 (2.6)
Solution latency
Shortcut	5174 (293)	3216 (240)	4830 (298)
Algorithm	12407 (484)	114449 (646)	10346 (480)
Cutoffs
Shortcut	1.4 (1.9)	.4 (1.6)	.9 (2.0)
Algorithm	37.0 (2.1)	36.8 (2.8)	17.2 (2.4)
Accuracy	Associativity
Shortcut	65.0 (3.4)	76.2 (2.3)	65.0 (3.4)
Algorithm	48.8 (1.6)	47.2 (1.8)	48.8 (1.6)
Solution Latency
Shortcut	11927 (524)	9389 (361)	10479 (585)
Algorithm	13396 (347)	12358 (373)	13359 (327)
Cutoffs
Shortcut	16.1 (2.8)	9.1 (2.1)	10.2 (3.2)
Algorithm	33.3 (1.5)	36.3 (1.7)	28.8 (1.5)

Note. Standard errors are in parentheses.