Developmental Changes in Morphology of the Middle and Posterior External Cranial Base in Modern Homo sapiens

Table 17

Mean Principal Components scores for the major PCs for each age group in each population for the entire basicranium. Note: sample size of complete basicrania of AC1 for the Polynesian population was insufficient to obtain a reasonable estimation of the mean.

Population	Age Cat.	PC1	PC2	PC3	PC4	PC5
Alaskans	AC1	0.05323	0.00302	0.00175	−0.00882	0.00855
Alaskans	AC2	0.04618	−0.01399	0.01446	−0.01085	−0.00150
Alaskans	AC3	0.02569	0.00815	−0.00014	−0.01146	0.00114
Alaskans	Adults	0.00969	0.00543	0.00499	−0.00409	0.00546
Austrians	AC1	0.07867	−0.02117	−0.03936	−0.03364	0.00580
Austrians	AC2	0.02695	0.00316	0.00068	0.02413	0.01203
Austrians	AC3	0.00584	0.02062	0.00347	0.02083	−0.00779
Austrians	Adults	−0.02377	−0.01075	0.00784	0.02859	0.00468
Egyptians	AC1	0.11390	0.02214	0.00609	−0.01172	0.00766
Egyptians	AC2	0.04530	−0.00072	−0.00789	0.00435	−0.02901
Egyptians	AC3	0.00920	0.01193	−0.00507	0.03377	−0.05306
Egyptians	Adults	0.00662	0.03986	−0.00195	0.01716	−0.01972
Mexicans	AC1	0.08308	0.02326	−0.02515	−0.01663	−0.01222
Mexicans	AC2	0.02838	−0.02994	0.01315	0.01064	0.00299
Mexicans	AC3	0.01160	−0.02266	−0.01056	0.00150	0.00459
Mexicans	Adults	−0.03151	−0.00378	0.00344	−0.00451	0.00588
Peruvians	AC1	0.00004	−0.10173	0.02027	0.01840	0.00450
Peruvians	AC2	−0.01429	−0.04447	0.00779	−0.00991	0.01923
Peruvians	AC3	−0.01735	−0.03330	0.01130	−0.01073	−0.00269
Peruvians	Adults	−0.03927	0.00426	−0.00411	−0.00933	0.00495
Polynesians	AC1	—	—	—	—	—
Polynesians	AC2	0.06510	0.02825	−0.00041	−0.00531	−0.00052
Polynesians	AC3	0.01269	0.04162	0.00118	0.00674	0.00423
Polynesians	Adults	−0.05657	0.04434	−0.01331	0.01068	0.00484
Utah	AC1	0.05701	−0.05851	−0.00487	−0.03191	0.01686
Utah	AC2	0.00952	−0.01100	−0.00275	−0.03556	−0.00031
Utah	AC3	−0.06937	−0.00900	−0.00478	−0.02770	0.00412
Utah	Adults	−0.04365	0.00478	−0.00146	−0.02958	−0.00178