Table 1.

Loadings of pre-fight displays on to the four principal components. (Only those activities with loadings of greater than 0.6 in each component were considered (shown in italic; S, smaller crab; L, larger crab).)

pre-fight display	PC1	PC2	PC3	PC4
S cheliped extension	0.146	0.749	−0.011	−0.001
S cheliped presentation	0.051	0.242	0.600	0.001
S high posture	0.012	−0.206	0.674	0.198
grapple	−0.055	0.218	0.009	0.738
S ambulatory raise	0.426	0.000	0.406	−0.236
L cheliped extension	−0.114	0.759	0.038	0.133
L cheliped presentation	−0.001	0.216	0.697	−0.120
L high posture	0.757	−0.189	−0.040	0.435
L ambulatory raise	0.630	0.138	0.001	−0.161