Table 1.

Statistics for object properties across conditions.

	Intercorrelated Phys. & Env.			Orthogonalized Phys. & Env.
	Phys. 1, Env. 1 (Mean)	Phys. 2, Env. 2 (Mean)	T-test p-value	Phys. 2, Env. 1 (Mean)	Phys. 1, Env. 2 (Mean)	T-test p-value
Physical dimensions
Shipping size, 3D diagonal (in)	8.11	29.51*	9.67 × 10−15	25.55*	11.84	9.67 × 10−7
Shipping weight (lbs)	0.40	11.79*	4.05 × 10−4	3.35*	1.19	6.72 × 10−4
Subjective AMT ratings
Size (1–7)	1.88	3.35*	1.84 × 10−14	2.68	2.49	0.25
Weight (1–7)	1.73	3.19*	6.97 × 10−12	2.38	2.25	0.50
Placeness (0–1)	0.003	0.063*	0.0041	0.058	0.024	0.159
Fixedness (0–5)	1.04	1.80*	1.25 × 10−10	1.25	1.18	0.30
Context (−1.18–0)	−0.373	−0.449	0.1791	−0.465	−0.431	0.55
Spatial definition (0–1)	0.241	0.389*	4.43 × 10−4	0.259	0.309	0.11

Notes—Conditions with the higher mean in each pairing are bolded. If the difference is significant, a star is also added. In the intercorrelated conditions, where both physical size and envelope size are matched, all other properties are intercorrelated, and thus significantly higher for larger objects (other than context, which is non-significant). In contrast, in the orthogonalized conditions, where physical size and envelope size are pitted against each other, there is no significant difference between conditions (though, except for spatial definition and context, the properties all trend towards increasing with larger physical size). Thus, if any effects appear due to larger interaction envelope, it is unlikely that it will be due to any of these other factors.