In 20202020, a team of researchers led by Laura A. Stockdale and Christin L. Porter sought to study "technopherence", or interruptions to parent-child interactions due to the parent looking at a phone. The study confirmed what earlier research showed--the infants had increased negative emotions similar to those experienced during original still face paradigm research that had prolonged effects on their behavior, even during the reunion phase. The researchers conclude that "The majority of American house-holds contain multiple cell phones (Pew Research Center, 20192019), and mobile phones are a normative part of developing infants' reality in the Western world today. The current study suggests that a modified version of the traditional SFP produces a robust still-face effect... Additionally, technoference may also blunt infants' emotional responses to parents' disengagement in ways that may be similar to infants with disengaged caregivers with depression. More research is warranted regarding the effects of mobile phone use by parents on these developmentally essential parent-infant interactions during the first year of life." This continued research on the impact of technology on parent-child interactions best fits with which APA theme?