Boyce et al. (2002) |
4.5–8 year olds |
Parental report of affect/behavior |
Increased L-R TMT associated with positive emotions and socially “competent” behaviors; decreased L-R TMT associated with negative emotions and “problem” behaviors |
Warmer L TMT associated with positive/approach emotions; warmer R TMT associated with negative emotions |
Boyce et al. (1996) |
8 year olds |
Parental report of affect/behavior |
Increased L-R TMT associated with increased aggression, decreased ego resilience, depression, externalizing, and internalizing behavior problems, schizoid behaviors, social withdrawal, and somatization |
Warmer L TMT associated with negative/withdrawal emotions |
Gunnar and Donzella (2004) |
3–5 year olds |
Parental report of affect/behavior |
Increased L-R TMT associated with increased smiling and laugher, decreased L-R TMT associated with increased sadness |
Warmer L TMT associated with positive/approach emotions; warmer R TMT associated with negative emotions |
Helton (2010) |
19.97 Mean age (undergraduates) |
Impulsivity assessed via performance on Go-No-Go tasks |
Warmer L TMT associated with increased errors of commission and faster reaction time |
Warmer L TMT associated with increased impulsivity/approach motivation; Increased R TMT associated with more “cautious” behavior |
Helton and Carter (2011) |
20.3 Mean age (undergraduates) |
TMT assessed at baseline by male or female experimenter |
Lower R TMT when measured by female investigator; Similar R and L TMT when measured by male investigator |
Placed in framework of “threat assessment”; interpretation not clear |
Helton et al. (2009a) |
Range of 18–33 years |
Attention assessed via performance on local and global sustained attention tasks |
Increased R TMT associated with sustained attention to global stimuli |
Warmer R TMT associated with global attention; interpreted as cognitive fatigue-related decreased R hemisphere activity |
Helton et al. (2009b) |
20 Mean age (undergraduates) |
No affect report following possible mood induction, attention assessed via performance on the sustained attention to response task |
Greater increase in R TMT compared to L TMT from pre to post-task |
Warmer R TMT associated with increased attentiveness |
Helton and Maginnity (2012) |
21 Mean age (undergraduates) |
Self-report of attention/inattention |
Increased R-L TMT associated with decreased inattention |
Warmer R TMT associated with increased attentiveness |
Jones et al. (2011) |
7–10 year olds |
No affect report following stress induction |
Low fetal-maternal “health” at birth associated with increased L-R TMT following stress |
Warmer L TMT associated with negative emotions |
Propper et al. (2010) |
19.66 Mean age (undergraduates) |
Self-report of affect at baseline |
No association between R-L TMT and any emotion; Ar-ITMT associated with increased anger/hostility |
Greater absolute difference between L and R TMT associated with anger/hostility |
Propper et al. (in press) |
Undergraduates (age not reported) |
Self-report of affect following mood induction |
Baseline: increased R TMT associated with increased positive affect; post-manipulation: increased R TMT associated with increased negative affect; increased L TMT associated with positive affect |
Greater absolute difference between L and R TMT associated with anger/hostility; other results not clear |
Propper et al. (2011) |
Range of 19–21 years per group (undergraduates) |
Self-report of affect following sustained unilateral visual stimulation |
Increased Ar-ITMT associated with increased anger/hostility, increased R-L TMT associated with increased anger |
Greater absolute difference between L and R TMT associated with anger/hostility; warmer R TMT associated with negative emotions |