RESUMO
Purpose: Most studies assessing hair cortisol were conducted with adults. As specific guidelines for infant hair collection are lacking, we developed a hair collection protocol for 12-month-old infants and assessed its acceptability and feasibility. Results: Out of the total (N = 45), 95.6 % (n = 43) of caregivers consented to the procedure, while one caregiver did not consent (2.2 %), and another requested the procedure to be halted before required amount of hair had been reached (2.2 %). Furthermore, two (4.4 %) infants did not have enough hair for collection. There was no attrition due to infant fussiness/crying. Discussion: We learned five lessons which can help to enhance reproducibility, mother's consent, and mother-infant comfort and acceptance of the procedure. The first lesson is to have the infant sit on the caregiver's lap to ensure the infant feels safe and remains relatively still. The second is to reassure caregivers by showing hair samples representing the amount to be cut as well as by clarifying no unaesthetic gaps would be visible. The third is to caress the infant's head to habituate them to the hair manipulation and to make soap bubbles as distractors. The fourth is to take extra care when securing the lock of hair for cutting because the infant scalp is thin and malleable. The fifth is to place a precision scale in the collection room to ensure the necessary weight is reached. Conclusion: Our hair collection protocol developed for 12-month-old infants was deemed feasible and acceptable, filled an important literature gap concerning the absence of published protocols for infants, and will contribute to increase the replicability and collection efficiency for other research teams.
RESUMO
Well-being (vs. ill-being) might function as an internal guide for approaching (vs. avoiding) situations, strategies, and achievements that ancestrally led to higher (vs. lower) reproductive success. Indeed, coupled individuals report higher well-being than singles, while depressive individuals report lower mate value and higher sociosexuality. Here we investigate associations between well-being, depression and evolutionary reproduction-related aspects (mate value, intrasexual competition, age, and sociosexuality). Overall, 1,173 predominantly heterosexual Brazilian women (mean = 31.89; standard deviation = 11.10) responded to online instruments measuring self-perceived happiness, life-satisfaction, depression, mate value, intrasexual competition, age, and sociosexuality. Multiple regression models indicated that higher well-being was positively predicted by mate value and negatively by intrasexual competition and sociosexual desire, while the opposite was true for depression. Although intrasexual competition and unrestricted sociosexuality can, under some circumstances, increase individual reproductive success, they are risky and suboptimally effective strategies, thus leading to feelings of ill-being. Contrarily, affective long-term bonds, higher mate-value, and lower intrasexual competition might increase feelings of well-being, because this would lead to a safer route towards ancestral reproductive advantages.
RESUMO
The goals of the present study were to investigate socio-demographic characteristics and well-being indicators associated with pet ownership. The respondents (N = 801, 53.8% females; 56.2% with children) came from the five macro-regions of Brazil (8% North, 28% Northeast, 36% Southeast, 18% South, 10% Central-West). Their ages ranged from 20 to 50 years. Over half of the sample (60%) reported living with a pet. Logistic regression showed that residence type (to be owner versus renter) and parental status (to be childless versus to have children) were predictors of pet ownership. We found interaction between pet ownership and sex on well-being indicators: the Mann-Whitney test showed that men who owned a pet reported better sleep quality, better relationship with neighbors and less sadness; whereas women who owned a pet reported lower life organization. With respect to life satisfaction, no differences were found between pet owners and non-pet owners. Implications of our findings and new research directions are discussed. Our study was conducted before the Covid-19 pandemic. The survey should be reapplied during and after the pandemic, so that we can deepen our knowledge of the socio-demographic characteristics and subjective well-being indicators associated with pet ownership.