I got myself in a debate on Twitter last night about this question. Someone made the following statement about people in Scotland

the majority wants Trident out.

I responded

Scot Soc Att Survey – 59% either in favour of nuclear weapons or no view

To ‘fess up straight away I was wrong about 59%, the true figure is 53%, but that’s still a majority. I gave a link to the correct data online (it’s set out in detail below) and the full source is the excellent Scottish Social Attitudes Survey.

What happened next is worthy of some examination because there is a view around the independence referendum that people don’t have enough information available to decide. This particular exercise in correcting one small misapprehension led to the following exchange

HIM: nice manipulation of the data. Kudos

ME: Since I gave rational answer to yr prev point I assume ‘nice manip’n of the data’ isn’t directed at me

HIM: no you attempted to manipulate data to substantiate your opinion.

HIM: it isn’t a factual error…Out of those that have an opinion, the majority want it out

ME: Have to agree to differ then because I think ‘neither in favour or against’ *is* an opinion

HIM: not when you’re claiming majority by manipulating stats. Majority of those of opinion want it out

HIM: is that correct? yes or no?

ME: I can’t explain further but I do have a reasonable understanding of statistics. Good night.

So without the constraints of 140 characters per message of Twitter who’s right, ‘him’ or ‘me’?

Here are the statistics I was referring to, courtesy of ScotCen Social Research:

Trident table

Click to enlarge

Source: Table in Scottish Social Attitudes Survey 2013

The first thing to say is the question asks whether Britain should have nuclear weapons, not Trident specifically. But since Trident missiles are the only nuclear weapons Britain possesses it’s a reasonable approximation. It should also be noted that the Scottish Social Attitudes Survey is a reputable, reliable and statistically valid source of opinion on the subject matter it covers. I know of no other up to date neutral source that addresses the same issue.

The nub of the difference between my interlocutor and me is whether people who answered ‘neither in favour or against’ should be included in the calculation of the percentage of people ‘against Trident.’ I say yes because to be neither for nor against is to express a view. Moreover, even a survey of this high quality is a relatively blunt instrument at catching the full subtlety of people’s opinions. So I could easily imagine a whole range of views underlying an opinion that someone is neither in favour nor against Britain having its own nuclear weapons. For example

  • You know, I couldn’t care less. I’ve got more important things to worry about
  • Well, I can see things for and against. It’s a fine balance
  • It’s not really relevant to defence these days but if the experts want it…
  • and so on.

In any event, the statement originally made was that ‘the majority wants Trident out’, not ‘the majority excluding “don’t knows” and those “neither in favour nor against” want Trident out’ – as the other person concerned amended his claim to when challenged. These are two quite different things.

To put it another way, if you lined up 100 Scots and said ‘Will everyone who is somewhat or strongly against Britain having nuclear weapons please step forward?’ 46 would. That’s a minority.

This sort of detail is important because it’s the only way to tease out the claims and counter-claims that accompany the independence referendum debate.

Incidentally, the question of Scotland being different from the rest of the UK features prominently in ‘Yes’ claims about the independence referendum. It is interesting to compare the results of the same question asked in the Scottish Social Attitudes Survey’s sister survey south of the border (the small percentages of ‘Don’t know’s have been excluded from this table).

Trident UK

As the authors of this comparison say

The differences in the level of support are not that large, and both parts of the UK could reasonably be described as being divided on the subject (the full report can be downloaded here).

To go back to the original issue, I maintain that there is not a proven majority of people in Scotland who ‘want Trident out.’ But I’m open to reasoned arguments that prove the opposite.