smacof (version 2.1-3)

morsescales: Morse Code Confusion Scales

Description

Two properties of Morse code signals. Each Morse code signal is a sequence of up to five 'beeps'. The beeps can be short (0.05 sec) or long (0.15 sec), and, when there are two or more beeps in a signal, they are separated by periods of silence (0.05 sec). The two external variables are:

• Signal type:

  • 1: All short beeps

  • 2: More short than long beeps

  • 3: Same short and long beeps

  • 4: More long than short beeps

  • 5: All long beeps

• Signal length (in seconds): 1 = .05, 2 = .15, 3 = .25, 4 = .35, 5 = .45, 6 = .55, 7 = .65, 8 = .85, 9 = .95

Usage

data(morsescales)

Format

Matrix of 36 morse codes by 2 properties. The first column contains the morse code letters.

References

Rothkopf, E. Z. (1957). A measure of stimulus similarity and errors in some paired-associate learning. Journal of Experimental Psychology, 53, 94-101.

Examples

# NOT RUN {
morsescales
# }