<< Pre-marital Intercourse >>

In their earlier adolescent years, the younger-maturing boys are also much involved in pre-marital intercourse. Their frequencies are much higher than the frequencies for the late-adolescent group in this period (Table 74). In subsequent age periods, the frequencies among the boys who became adolescent first remain 50 per cent to 75 per cent higher.

Table 74. Frequency of pre-marital intercourse,
as related to age at onset of adolescence
Age at
Adol.		 Cases Pre-Marital Intercourse
and Age at Adolescence
Total Population Indices,
Total
Populations		 Active Population
Mean
Frequency		 Me-
dian
Freq.		 %of
Total
Outlet		 By
Means
%		 By
Me-
dians
%		 Incid.
%		 Mean
Frequency		 Me-
dian
Freq.
Educ. level 0-8 -- Activity between adol.-15
8-12 131 1.86 ± 0.33 0.44 37.3 286 220 66.4 2.80 ± 0.46 1.39
13 180 1.13 ± 0.15 0.20 35.3 174 100 60.0 1.88 ± 0.23 1.03
14 270 0.80 ± 0.12 0.00 34.7 123 --- 41.5 1.94 ± 0.25 1.25
15+ 115 0.65 ± 0.15 0.00 33.0 100 --- 31.3 2.08 ± 0.37 1.25
Educ. level 0-8 -- Activity between 16-20
8-12 114 3.06 ± 0.44 1.58 58.8 306 396 86.0 3.56 ± 0.49 1.98
13 165 1.64 ± 0.16 0.79 53.3 162 198 89.1 1.84 ± 0.17 1.09
14 266 1.46 ± 0.16 0.47 56.9 145 118 82.3 1.78 ± 0.18 0.83
15+ 154 1.01 ± 0.14 0.40 45.2 100 100 74.7 1.35 ± 0.17 0.73
Educ. level 9-12 -- Activity between adol.-15
8-12 170 0.91 ± 0.20 0.00 22.7 162 --- 48.2 1.88 ± 0.39 0.48
13 197 0.96 ± 0.15 0.01 27.7 171 --- 50.3 1.91 ± 0.27 0.89
14 213 0.56 ± 0.13 0.00 22.9 100 --- 35.2 1.60 ± 0.35 0.80
Educ. level 9-12 -- Activity between 16-20
8-12 162 1.58 ± 0.24 0.29 40.3 155 161 71.0 2.23 ± 0.32 0.78
13 196 1.54 ± 0.18 0.57 43.8 151 317 76.5 2.01 ± 0.22 1.16
14 207 1.02 ± 0.15 0.38 37.9 100 211 72.5 1.40 ± 0.19 0.77
Educ. level 13 + -- Activity between adol.-15
8-12 893 0.11 ± 0.02 0.00 3.2 1100 --- 11.8 0.90 ± 0.16 0.29
13 896 0.07 ± 0.02 0.00 2.5 700 --- 7.8 0.87 ± 0.18 0.34
14 600 0.06 ± 0.02 0.00 2.6 600 --- 7.7 0.71 ± 0.17 0.29
15+ 114 0.01 ± 0.00 0.00 0.4 100 --- 7.0 0.11 ± 0.04 0.08
Educ. level 13 + -- Activity between 16-20
8-12 893 0.30 ± 0.03 0.00 9.9 177 --- 43.8 0.68 ± 0.07 0.24
13 896 0.22 ± 0.03 0.00 8.7 129 --- 35.6 0.62 ± 0.06 0.20
14 600 0.21 ± 0.03 0.00 9.3 124 --- 35.5 0.59 ± 0.08 0.17
15+ 170 0.17 ± 0.05 0.00 7.7 100 --- 32.9 0.52 ± 0.13 0.21
Educ. level 13+ -- Activity between 21-25
8-12 561 0.54 ± 0.06 0.03 19.6 154 300 55.3 0.97 ± 0.10 0.36
13 566 0.40 ± 0.05 0.01 17.4 114 100 51.4 0.77 ± 0.09 0.30
14 393 0.35 ± 0.05 0.01 16.4 100 100 50.9 0.69 ± 0.09 0.28
15+ 136 0.38 ± 0.09 0.01 17.1 109 100 50.7 0.74 ± 0.16 0.34
Educ. level 13+ -- Activity between 26-30
8-12 176 0.78 ± 0.11 0.13 28.6 144 186 64.2 1.22 ± 0.15 0.48
13 179 0.80 ± 0.15 0.07 34.4 148 100 59.2 1.35 ± 0.24 0.51
14 152 0.54 ± 0.08 0.07 25.8 100 100 58.6 0.92 ± 0.13 0.44

Data cover the pre-marital intercourse which is had with companions

During this early adolescent period, the younger-maturing boys of the college level are involved in pre-marital intercourse in 11.8 per cent of the cases, while the older-maturing boys are involved in 7.0 per cent of the cases. The active incidence figures beyond 15 years of age are more or less the same for each of the adolescent groups; but the accumulative incidence figures (showing the number of males from each adolescent group who are ever involved, in the course of their lives) show some striking differences between the adolescent groups (Table 75, Figure 93). Ultimately 95 per cent of the early-adolescent boys of this college group obtain experience in heterosexual intercourse, either through pre-marital or marital relations, by age 30; but hardly more than 80 per cent of the late-adolescent males have arrived at such experience in intercourse by that age. For the males who become adolescent at intermediate ages, i.e., at 12, 13, or 14 years of age, the accumulative incidence curves are intermediate (Table 75, Figure 93). Ultimately the curves for the groups which are adolescent at 12 to 14 reach the same level (that is, 95%) which is obtained by the earlier-adolescent boys, but the group which does not become adolescent until 15 or later shows no evidence that it will get much beyond the 80 per cent mark.

Table 75. Age of first intercourse,
as affected by age at onset of adolescence
First Intercourse and Age at Adolescence
Age Accumulative Incidence Data
Educational Level 13+
Adolescent
by 11 		Adolescent
at 12 		Adolescent
at 13 		Adolescent
at 14 		Adolescent
at 15 +
Cases % with
Exper.		 Cases % with
Exper.		 Cases % with
Exper.		 Cases % with
Exper.		 Cases % with
Exper.
8 300 0.0 707 0.0 979 0.0 647 0.0 183 0.0
9 300 0.3 707 0.0 979 0.0 647 0.0 183 0.0
10 300 0.3 707 0.0 979 0.0 647 0.0 183 0.0
11 300 1.7 707 0.0 979 0.0 647 0.0 183 0.0
12 300 3.3 707 2.4 979 0.0 647 0.0 183 0.0
13 300 8.7 707 4.2 979 2.9 647 0.0 183 0.0
14 300 13.0 707 7.5 979 5.0 647 5.0 183 0.0
15 300 15.0 707 11.6 979 8.6 647 7.6 183 4.4
16 300 23.0 707 19.0 979 13.6 646 12.8 183 9.3
17 300 29.0 707 27.4 978 22.2 645 19.5 183 14.8
18 290 37.2 690 35.8 948 28.7 626 28.8 183 21.9
19 275 44.7 646 43.2 886 36.0 590 35.8 176 30.7
20 259 53.7 595 50.1 791 43.9 526 42.4 167 37.1
21 236 57.2 499 54.5 676 50.0 470 47.9 151 43.7
22 198 65.1 397 61.5 555 58.4 398 53.8 123 52.0
23 176 68.2 329 64.4 462 66.7 327 57.2 102 52.9
24 146 74.7 264 72.7 379 71.2 281 62.6 81 58.0
25 126 79.4 229 79.0 334 76.0 239 71.5 73 64.4
26 107 87.9 198 83.8 299 79.6 216 78.2 63 66.7
27 86 90.7 169 85.2 270 81.9 198 81.8 50 70.0
28 82 91.5 150 85.3 240 85.4 182 86.3 44 70.5
29 70 95.7 139 85.6 216 86.1 169 88.8 39 79.5
30 60 95.0 121 87.6 199 89.4 158 91.1 34 82.4
31 56 94.6 107 91.6 181 90.6 153 92.2   
32 51 94.1 97 92.8 166 91.0 146 92.5   
33    89 92.1 148 91.2 131 92.4   
34    83 92.8 137 92.7 120 94.2   
35    76 92.1 126 96.0 115 93.9   
36    70 94.3 114 95.6 110 94.5   
37    64 93.8 101 95.0 99 93.9   
38    60 93.3 96 92.7 96 95.8   
39    57 93.0 85 96.5 90 95.6   
40      79 96.2 84 95.2   

Accumulative incidence data based on males of the college level.

Figure 93. Relation of age at onset of adolescence to accumulative incidence of total intercourse

Based on lifetime histories of males of the college level.
Each adolescent group maintains Its relative position for 20 or more years.

It is amazing that there should be nearly 20 per cent of these late-adolescent males who have not had some sort of heterosexual coitus by age 35. Most of the late-adolescent males who still lack coital experience in their thirties, have depended upon masturbation and nocturnal dreams rather than upon any other socio-sexual source for their outlet. An unusual proportion of these late-adolescent males is introvert and socially timid, and a considerable number is not yet married at 35 years of age (Table 76, Figure 95).

Table 76. Age of marriage,
as affected by age at onset of adolescence
Marriage and Age at Adolescence
Age Accumulative Incidence Data
Educational Level 13+
Adolescent
by 11 		Adolescent
at 12 		Adolescent
at 13 		Adolescent
at 14 		Adolescent
at 15 +
Cases % with
Exper.		 Cases % with
Exper.		 Cases % with
Exper.		 Cases % with
Exper.		 Cases % with
Exper.
8 307 0.0 724 0.0 986 0.0 651 0.0 187 0.0
9 307 0.0 724 0.0 986 0.0 651 0.0 187 0.0
10 307 0.0 724 0.0 986 0.0 651 0.0 187 0.0
11 307 0.0 724 0.0 986 0.0 651 0.0 187 0.0
12 307 0.0 724 0.0 986 0.0 651 0.0 187 0.0
13 307 0.0 724 0.0 986 0.0 651 0.0 187 0.0
14 307 0.0 724 0.0 986 0.0 651 0.0 187 0.0
15 307 0.0 724 0.0 986 0.0 651 0.0 187 0.0
16 307 0.3 724 0.1 986 0.0 651 0.0 187 0.0
17 307 0.3 724 0.1 985 0.2 650 0.0 187 0.0
18 297 0.7 706 0.4 957 0.4 631 0.0 187 0.0
19 282 2.5 660 1.4 897 1.2 594 0.7 180 0.0
20 266 3.4 609 3.1 802 2.9 530 2.8 170 0.0
21 243 5.3 510 6.3 689 4 9 473 5.3 154 0.6
22 205 9.8 407 12.0 568 11.1 402 10.0 126 6.3
23 183 16.9 339 19.8 474 16.5 332 14.8 105 8.6
24 152 28.3 274 32.5 391 23.3 288 20.1 84 15.5
25 131 37.4 238 45.0 345 29.9 246 29.7 77 23.4
26 112 48.2 206 52.4 310 42.3 224 40.6 67 26.9
27 90 55.6 174 60.3 278 51.8 205 49.3 54 37.0
28 86 59.3 155 63.2 248 60.1 188 55.3   
29 74 67.6 144 67.4 223 64.6 174 59.2   
30 64 68.8 125 73.6 206 71.4 162 67.3   
31 60 73.3 110 83.6 188 73.9 156 71.2   
32 55 76.4 100 84.0 171 77.2 149 73.2   
33 53 77.4 91 85.7 154 78.6 135 75.6   
34    85 87.1 142 81.0 124 79.8   
35    77 87.0 131 83.2 119 80.7   
36    70 88.6 119 84.9 114 82.5   
37    64 87.5 105 83.8 103 80.6   
38    60 86.7 100 83.0 100 83.0   
39    57 86.0 89 83.1 93 83.9   
40    50 88.0 83 85.5 87 86.2   

Accumulative incidence data based on males of the college level.

Figure 95. Figure 95. Relation of age at onset of adolescence to age at marriage

Based on males of the college level.
A social phenomenon is correlated with the factors which control onset of adolescence.


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