Table 2.

Speech tasks and resultant quantitative speech measures.

Task	Tokens	Measure	Abbreviation	Acoustic vs. kinematic	Derivation
DDK	AMR: /bʌbʌbʌ/ SMR: /bʌdʌgʌ/	Duration, AMR	dur_AMR	Kinematic	Auto-extract all variables (Rong et al., 2018)
		Duration, SMR	dur_SMR
		# cycles, AMR	ncyc_AMR	Kinematic
		# cycles, SMR	ncyc_SMR
		Maximum velocity, AMR	vel_AMR	Kinematic
		Spatiotemporal index, SMR	sti_SMR	Kinematic
		Rate, AMR	rate_AMR	Kinematic	Formula: $\frac{\#\mathit{\text{cycles}}}{\mathit{\text{total duration}}\left(\mathrm{s}\right)}$
		Rate, SMR	rate_SMR
		Rate, AMR vs. SMR	rate_AMR.SMR		Formula: $\frac{{\mathit{\text{rate}}}_{\mathrm{AMR}}-{\mathit{\text{rate}}}_{\mathrm{SMR}}}{{\mathit{\text{rate}}}_{\mathrm{AMR}}+{\mathit{\text{rate}}}_{\mathrm{SMR}}}$
Maximum phonation	/ah/	Duration	dur_ah	Acoustic	Auto-extract duration following manual TextGrid parsing (Podgornik, 2011)
		Cepstral peak prominence	cpp	Acoustic	Auto-extract cpps (Maryn & Weenink, 2015)
CVC repetition	/bit/, /bæt/, /but/ (×3, randomized)	Formant centralization ratio	fcr	Acoustic	Supervised extraction of F1, F2 following manual TextGrid parsing (McCloy, 2012/2018) Formula: $\frac{F{2}_{\mathrm{u}}+F{2}_{\mathrm{\ae }}+F{1}_{\mathrm{i}}+F{1}_{\mathrm{u}}}{F{2}_{\mathrm{i}}+F{1}_{\mathrm{\ae }}}$
Multisyllabic word repetition	Weak–strong: <banana>, <computer>, <potato>, <pagoda>, <thermometer> (×2, randomized)	Pairwise variability index, weak–strong	pvi_ws	Acoustic	Auto-extract duration following manual TextGrid parsing of the first (V1) and second vowels (V2; (Podgornik, 2011) Formula: $\left|\frac{{\mathit{\text{duration}}}_{V1}-{\mathit{\text{duration}}}_{V2}}{\left({\mathit{\text{duration}}}_{V1}+{\mathit{\text{duration}}}_{V2}\right)/2}\right|\times$ 100
	Strong–weak: <stethoscope>, <butterfly>, <bicycle>, <dinosaur>, <caterpillar> (×2, randomized)	Pairwise variability index, strong–weak	pvi_sw
Picture description	WAB picnic scene picture	Articulation rate	articrate	Acoustic	Auto-extract total speech duration; manual syllable count (Green et al., 2004) Formula: $\frac{\#\mathit{\text{syllables}}}{\mathit{\text{total speech duration}}\left(\mathrm{s}\right)}$

Note. DDK = diadochokinesis; AMR = alternating motion rate; SMR = sequential motion rate; CVC = consonant–vowel–consonant; WAB = Western Aphasia Battery.