Städtetourismus

Methodological

issues

in

the

sampling

of

urban

visitors

261

ther

encourage

this

type

of

tourism.

A

large

proportion

of

the

category

'other'

consists

of

visitors

who

declared

education

to

be the

main

purpose

of

their

trip.

3.2.

Representativeness

of

the

sample

It

can

be

argued

that

factors

such

as

time

of

year,

the

location

visitors

were

intercepted

and

inter-

view

bias

may

have

had

an

effect

on

the

responses

obtained.

It

is

generally

accepted

that

both

in-

terviewer

bias

and

the

gender

and

age

of

the

interviewer

may

affect

the

number

of

responses

from

certain

types

of

visitor

(inter

alia

de

Vaus,

1996).

In

a

survey

of

overseas

visitors,

the

ability

of

the

interviewer

to

communicate

with

respondents

adds

further

potential

for

bias.Without

the

re-

sources

to

employ