pHYSICAL DEVELOP~，~i NT<br > Tm sd<ly， September ~llJ. Lol~sy sti~t<i~g school or~<br > Tl，，r2，1y. l lried my oht ，ll.form o:， t)~l I l:~m~e o，tgrol ~.l<br > it ~o t，，ldly tl3，;t my filtl:，er is l?ei~Ig forced to 1).y me ~1<br > ~lcll~ oHe lomorrom. He is goi~fl ~lh the 1l~1ll b~t [ ca~l l<br > l，cll~ it if my I)ody is il~ a gromtb beriod， ca~ 17<br > S~c ]i~.m~clld， The :~ecret i)iary ot Adrian Mole， Aged 13%<br > )()11:%( I:N(F. ?PiN~ TI|E YEARS between puberty， when the secondary<br > j~ sexual c harac teristics start to appear， and 1 {q， the age oi legal aduhhood. The term<br > "adolc~，ccnt" ~s not one oi pinpoint ac(ciracy: it can reJer to SOllleOlle as yOLIHg as I0 o~<br > a~ ~dd a~ I ~ s~ it ~ more usetul to think o[ people as passing fl~rough a particular sta.~c<br > ot adok s~cnce carlv， middlc， orlate- rathc~ than lumping all adolescents， ot al/agc:%<br > umcthcl under the ，m~glc label "teenager ，" Although rates of development dittcr， thc<br > p:ittcrm， arc the same This [irst part of the book looks at these patterns， and the impac:t<br > ，m the adolescent and the tamily of each ol thcse milestones.<br > Ik rhap ~ the mo，，t obvious sign that a child has become an adolcscent is that hc or she<br > ~Ut~Clcql) ~，ht~ot ~ tip in height. At the peak o{ this growth spurt a bov may gain as much<br > ，~s : o In kl2 I~， ~mi in 12 months， so that between his I Bth and 14th birthdays hc<br > ~av out~znm all his clothes. It s important to realize， however， that cmotional and<br > plw~，ical dc，chqm/ul~t ，l~ul t always go hand in hand. A child who is physically well<br > dc~l<，!x d v， m t netu~<uih hc capable ot acting in a more "grown-up" way than one<br > who at the <，tune n~< ~s <，till physically les~; nlatl_ll-C Typically ill developed countries ill<br > the I )~l(!<" rid， h~ ~in tl~cu spult at lOI/? years and reach thcir year ，，)i iastcst growth at the<br > ~ ，I ~0 ~~，，，，~ l(，lh，~ the same pattern two years later， but their peak growth rate<br >