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To create class intervals in SPSS you need the Recode procedure again. In Old and New Values enter the ranges 0–5 and 6–16, giving these the new codes of 1 and 2 for the two-value solution, and 0–2, 3–5, 6–8, and so on for the metric class interval solution, again giving each interval a new code. Note that ‘Up to 5 channels seen’ and ‘Six or more channels seen’ are the new researcher-defined values, but what SPSS is calling New Values are the codes that ‘stand for’ the new categories.