One of the most commonly used behavioral measures of motivational tendencies is the approach-avoidance task (AAT). A recently developed mobile version of the AAT uses tablets or smartphones to allow physical movement toward or away from stimuli. The current study examined whether pull and push movements would relate to individual differences in neural activity and personality. The tablet-based task assessed reaction time and force exertion to pull/push dessert and object pictures. Event-related potentials over the right and left frontal cortices during the task assessed motivated attentional processing. Participants had greater approach motivation to pulling the dessert pictures, as measured by faster reaction times. Event-related potential results revealed that approach (pull) movements to images activated more motivated attentional processing over the left hemisphere than avoidance (push) movements. Higher tendencies to impulsive behavior related to greater relative left P3 amplitudes and greater force exertion when approaching dessert images. Overall, these results reveal that lateralized P3 amplitudes over the frontal cortex are distinct neural activation patterns associated with approach-motivated processing, personality, and force exertion. In addition, this study reveals the utility of examining approach-motivated behavior using a novel AAT.