OMbook_glossary

I think this may be the index with more names than any other, s-value, s-index...

I had never come across these until I was reminding myself about stanines. Stanine...

I remember reading about these, hm, some time in the 1980s I suspect when I...

Well this is really small print but it's an absolute joy for an amateur statistics...

Not to be confused with standard deviation (SD). Details Really understanding the difference between SD and SE...

The latest in a long series of names for these phenomena. This one has...

In our fields this refers to a bias that can affect self-report particularly on questionnaires...

What it says! The catch is that there are so many of them and...

This is a key idea within the Null Hypothesis Significance Testing (NHST) paradigm. ...

International non-profit society for ... psychotherapy research. In principle pantheoretical, multimodality, multiprofessional and international,...

Very geeky stuff this. Sobel's test is a parametric null hypothesis test of the significance...

This is going to be a small introduction to a big and important topic. ...

Also known as the Spearman-Brown "prediction" or even "correction" formula and apparently there's an argument...

What it says! The gradient of a linear regression. See the entry Regression and...

Well it's what it says isn't it? It's about how you score multi-item measures...

The SOS-10 is a brief self-report scale of 10 items that measures psychological health and...

These are ways of transforming scores on some measure one effect is to remove the...

A square root of a number is the number which multiplied by itself results in...

This has become an important idea in relation to confidentiality, anonymity and pseudonymisation of data. Details The...

This is a little one but partly to cover my love of words like this....

A good test of distribution fit. (That's a graphic from my Rblog post about...

A good, arguably the best, test of distribution fit. (That's a graphic from my...

Distinguish from sensitivity in screening and from sensitivity to change. These include any ways of exploring...

The idea that a set of data is a "sample" is so ingrained in the...

The proportion of people who don't have the problem who will score below the criterion...

The proportion of people with the problem who will score above the criterion (cutting point)...

The idea comes out of medicine. Paradigmatic historical examples include the Guthrie heel prick...

I confess this is here largely to pique people's interest and take them to my...

Used to stand for "Statistical Package for the Social Sciences", perhaps still does! Was,...

Yes, I admit, partly another way to push the R project (!) but no, really,...

This is probably a very underused method in the fields of mental heath and therapy....

We put the scatterplot as one of the five vital plotting procedures for therapy outcome/change...

With central location, one of the two fundamental ways of summarising a distribution of observations...

What it says! Used pretty interchangeably and generally in the context of comparing different...

Means what it says but be careful ... Details It means a subgroup or subset of...

This is probably the most quoted measure of dispersion and it's just the square root...

Just what it says really! Two important issues to hold in mind.Firstly that the...

What it says! Often written as n. It matters because it determines how...

A number describing data. Details A sample statistic summarises some aspect of sample data, it is generally...

For our purposes a skew distribution is an asymmetric one: one which has a longer...

Self-report questionnaire designed to address Carl Rogers' concept of the fully functioning individual. Details Originally...

This is about Stevens' 1946 largely unhelpful categorisation of scales into categorical/nominal, ordinal, interval and...

The SDQ is probably the most used measure in work with children and adolescents. ...

Clearly, how much scores change with therapy is not just a function of the sensitivity...

In Chapter 6 we had this as: Specific, Measurable, Achievable, Relevant and Time-framed but apparently...

The SCORE-15 (Stratton, P., Lask, J., Bland, J., Nowotny, E., Evans, C., Singh, R., Janes,...

We have tried to be careful in the book to use "dataset" instead of "sample"...

This is the most commonly used non-parametric correlation coefficient in our field. It is...