Table 2.

Descriptive Statistics

	Full-terms			Preterms			t
	N	M	SD	N	M	SD
3-Year Information-Processing
Memory
Visual recognition memory a (% Novelty)	85	60.21	5.26	43	57.52	5.38	2.71**
Delayed Recognition (% Novelty)	73	62.30	8.00	38	63.66	6.26	.92
Recall memory (% Correct)	79	77.84	16.33	42	70.87	18.19	2.08*
Representational Competence
Cross-modal transfer (% Novelty)	83	48.27	4.60	41	46.69	6.21	1.60
Attention
Mean look duration (composite) b	85	−.07	0.57	43	.18	.63	2.25*
Shift rate (composite)b	85	.03	0.78	43	−.19	.59	1.58
Speed
Reaction time (VExP baseline in ms)	78	208.18	29.22	38	204.68	30.30	.60
Reaction time (VExP post baseline in ms)	83	229.88	30.87	39	230.34	32.13	.08
3-Year Language
Peabody Picture Vocabulary Test (PPVT)	76	87.39	15.51	35	82.06	17.12	1.63
Verbal Fluency	79	3.77	3.10	36	4.64	3.63	1.32
13-Year Language
Peabody Picture Vocabulary Test (PPVT)	84	101.50	13.54	43	97.93	15.36	1.34
Verbal Fluency	81	12.71	2.83	43	12.79	2.68	.16

^†p < .10;

^*p < .05;

^**p < .01 (2-tailed).

Note. VExP = Visual Expectation Paradigm.

^aA composite formed by averaging the two recognition-memory batteries.

^bAn average of variables standardized to a mean of 0.