sightcrs; 2) to cOlnparc sig/lters and nonsighters with respect to age,
sex, cc.luc:ati Oll, <w<; re~ ion of the country in which they live; .)) to
uf.'tC'111lillf: the attitudes of bot:) 5ighters and nonsighters regarding the
rl~rortJl)g of sightillgs; ,l) to assess attitudes regarding various aspects
of UFO phenOII\ena and related topics.
~!I;.,thod
Survey Sample
ln the 19(,8 Colol'ado ~tlldy, foul' surveys were carried out: a
~"llj'\'ey of adults, " sLlrvey of tcen-agers, a survey of sighters, and n
sune;: of college stUJl~!lt~,
,\. AJult sf)i"plt', national opinion survey.
The 0.;lt,'l. in this st:rv(;'y were obtained by mean:; of a personal
1I1tCl'viclI' rescarLl\ survey I conducted by the Opinion Research l:oTporation,
of 2.050 adults IS .ve~JrS of :Jge and over resic.ling in private hou~'if~liold~
in the contin01ltal Uni ted States. Interviewing took place bet\veen 21
h'bruary ~ll1l1 I::' ~lu1'cil l'l(,S. Sample selection was made by an equal-
probability 5ilmple technique. A detailed description of the sampling
prO~edllTl' provided hy Opinion Research Corpora,jon uppear5 in Appendix n,
l.ompari:,o!1s of poptdatjoj) and survey 5Cll'1plo characEeristic uprear .i.n
Tables 4 "no 5, providl'd by the Opinion R/;'scarch Corporatior., The ~ji:,e of the
S;I.lI)l'lC an,j the 11lcthod of ~"~llTlrling make it possible to make infcre~\ccs
1'e~an.lin}: the ;\J1\crican public 3t large anJ to mak.e comparisons among
:-'l'hgroup:s .
B. Tl'Em-agc sample, Iwtional ojnnioll ~urvey.
'l1ds SUl'\'c:,' of ,lSJ tecll-t1g<:,rs wa~ conducted in conjunct ion with
the ~ld\llt sun'l')'; (',Iell tC'l'n-ager who rartjcipatcd was a member of a
househOld in ',;l:icll ,In adult' \~as <:Ibo interviewed. Com]1ad~on:; of
l1ul'ulatiol1 <Jlld samrlc l·h;Jt'nl.'teristics for tcct1-agcrs arpcar in 'J'a:) 11' :),
;11 s () p1'0\ j \; cd [,;- Un i Jl i 1111 Res, 'il rch Corpora t i Oil •
l' , Sight 1..'1' slln'cy
[1,,1;1 \,'en' obt"incd from 9,1 ciightel's of UFOs who~;c n:I!1\CS ·... ere
Jr~l\\Jl ['rom tllC projcl't·;j!~htil1!~ files, In dddition to n~p()l'ts nwJ·:'
\lin'l,,:tl:' to the Pl'(1.jl'~t, thl'n' were re]1ort files, duplicati/li: jll pd1't
C1SC;-; 011 file Id:-l\ till' ,\,\. "'on'c"; Project IHue Book iJl1d \<Iilh NILi\I',
-,ightcrs ~ 2) to compare dgl1ters and nonsighten with respect to age,
,;cx, cducati011, ,w,; regiClfl of the Coulltry in which they live; 5) to
uctC'l'll1inc the atti.tudes of bot;l si.ghters rt.nd nonsightcrs regarding th€
rl'Forting of sightillgs; ,I) to assess attitlAdes regarding various aspects
of UFO phenOYIH~na and related topics.
~k'thod
Survey SaJilP~
In the l~l(,t) l:olol'ado ~tl,dy, foul' surveys were carried out: a
';['l'\'ey of adlilts, "~LlrvC'y or teen-agers, a survey of sightel's, and (1
survey of coll<.!gc stUJl'!lt~.
,\. I\JUlt 5;)I".p1(', natIol\al opinion survey.
The ''!;It,l in thi.5 s\:rv<:y Wl')l'E' obtained by means of a rersonal
llltl'l'Vj(l, rcst'al'd\ survey, conducted by the Opinion Research l:orporation,
of 2,nSO adul ts .1 S (ears of age and over reshIing in private housf:ilolds
in the contin"lltal United States. Interviewing took place betl"een 21
i:l'bl'uary and I:, ~lu1'cil l'l('S. Sample select.ioll was made by nn equal-
probabi lity sample tt,chniqll(~. A detailed dcscr.iption of the sampling
pl'O"eullr~' l'ro"Jded h~' Upinion Research Corpora, ion uppear~ in Appendix (J,
\ollipari,olls of population and ~\lrvey sal'1plo chaTClCf;cristic appear in
TabJ('s 4 ;.no S, providl'd by the Opinion R(;'search CorporatiQr" The ;;izc of the
5;1);1111(' an,j the lHc-thou of :;,lITlpling make it possible to make intenmcc~
1'J.':::'1l'Jil)l~ the ,\nK'rican pul1lic CIt large and to m:lkc comparisons anlong
~llhgroups ,
B. ']'('cn-agc sample'. lH1tional op1niol1 :-;urv()y,
'll1is ~ul'\'ey 01'lS1 tecn-flge:!'S wa~ contiuctcd in conjullct ion with
the :ld\llt sun','y; (',Icil tCl'll-agcr who part i cip:ltGd was a member of n
hotlsclwlJ in ',;I:i<:ll all "dldt· 'vas <.Ibo interviewed. Com]la1'i~ons or
IWPlilatl"l1 ;Y11l1 samrlc ,'hari\l'tcristics for tccn-:Jgcrs arpear in lac.l)" r"
:11 ~() 1)1'0\ j l:l'd I.)' Un iII i 11]1 Res,'arch Corpora t i 011.
l', ~i.lll1tl'l' SU1VL':'
JJ';ll,ll 1'1'0111 till' pro/cct" i);ht ill); fi le~;,
,Iir('l~tl:' to the 1'l'().i(,'~t, tl1,'l'l' were report files, duplicatiliJ: in p.lr't
,';1';(':-' Ol\ fill' Idth till' '\'\' I;on',"'; Project Hill/, Book ilml willi r\jeM',
"·,,1
..., ,,;. ~)