Affective reactivity to cry sounds predicts young women’s reactivity and behavior in a simulated caregiving task

Different populations of adults (experienced vs. inexperienced caregivers, men vs. women, abusive vs. nonabusive parents, etc.) have been reported to differ in their affective reactions to the sounds of infant crying. These differences are thought to impact caregiving behavior and, in some instances, to affect long-term outcomes for infants. There can be great intra-group variation, however, even when group differences are significant; modeling developmental process will require a finer grained approach. We have undertaken a pair of studies intended to validate the Negative Affect Scale (NA) from the PANAS as a measure of individuals’ affective reactivity to cry sounds. In Study 1, 306 young women who were not yet mothers listened either to infant crying or to birdsong. The results supported the NA as a measure of reactivity to crying. In Study 2, a new sample of 301 young women listened to crying in a screening task; a group of “high reactors” (n = 21) and a group of “low reactors” (n = 22) then participated in a simulated caregiving situation. Individuals’ affective reactivity to the caregiving simulation mirrored their affective reactivity in the screening task, and rates and overall organization of caregiving behavior differed between the groups. Changes in negative affect, then, appear to be both a result of infant crying and a determinant of some aspects of caregiving behavior. Further studies will extend these laboratory results to real infants and their caregivers, and further validate the NA as a measure of individual differences in reactivity to cry sounds.     

Do distracting activities increase tolerance for an infant cry?

Professionals recommend parents engage in distracting activities to mitigate negative effects of inconsolable infant crying (e.g., Deyo, Skybo, & Carroll, 2008; Goulet et al., 2009). We evaluated the availability of alternative activities on six undergraduates’ tolerance for a recorded infant cry; three students tolerated the cry longer when distracting activities were available. Our results show that distracting activities could decrease the aversiveness of inconsolable infant crying for some individuals; additional research in natural caregiving situations will help determine the generality and social validity of this finding.     

RESURGENCE OF INFANT CAREGIVING RESPONSES

Two experiments were conducted to identify the conditions likely to produce resurgence among adult human participants. The preparation was a simulated caregiving context, wherein a recorded infant cry sounded and was terminated contingent upon targeted caregiving responses. Results of Experiment 1 demonstrated resurgence with human participants in this negative reinforcement preparation. Results of Experiment 2 showed that responses with a longer history of reinforcement showed a stronger resurgence effect relative to responses with a shorter and more recent history of reinforcement. These results show that the resurgence phenomenon occurs across populations and types of reinforcers. Additionally, results indicate that length of reinforcement history is a variable that may affect the magnitude of resurgence.     

Judgment of infant cry: The roles of acoustic characteristics and sociodemographic characteristics

Adult judgments of infant cry are determined by both acoustic properties of the cry and listener sociodemographic characteristics. The main purpose of this research was to investigate how these two sources shape adult judgments of infant cry. We systematically manipulated both the acoustic properties of infant cries and contrasted listener sociodemographic characteristics. Then, we asked participants to listen to several acoustic manipulations of infant cries and to judge the level of distress the infant was expressing and the level of distress participants felt when listening. Finally, as a contrasting condition, participants estimated the age of the crying infant. Using tree‐based models, we found that judgments of the level of distress the infant was expressing as well as the level of distress listeners felt are mainly accounted for by select acoustic properties of infant cry (proportion of sound/pause, fundamental frequency, and number of utterances), whereas age estimates of a crying infant are determined mainly by listener sociodemographic characteristics (gender and parental status). Implications for understanding infant cry and its effects as well as early caregiver‐infant interactions are discussed.     

Would situational stress be harmful for anyone? The influence of situational factors and trait empathy on women’s response to infant crying

Individual differences in responsiveness toward infant crying are well understood. Little research, however, has examined the effects of situational risk factors (e.g., social stress, cognitive load) and possible interactions between situational and dispositional factors on response toward infant crying. This study examined if trait empathy (conceptualized as empathic concern; EC, and personal distress; PD) moderate situational factors’ relationship with people’s intentions in response to infant crying. Social stress was manipulated using the Trier Social Stress Test. Cognitive load was manipulated by requiring participants to keep syllable-strings of either two or eight syllables in mind while listening to an infant crying. Participants responded to question items examining their caregiving and neglect intentions in response to the crying stimulus. Multilevel regression analyses demonstrated that trait empathy (empathic concern in particular) was strongly associated with neglect intention under cognitive load. Participants with high EC showed strong neglect intention with increasing cognitive load. Furthermore, results also showed that social stress increased neglect intentions and reduced care intentions; these effects were more remarkable among participants with both low EC and low PD. These results suggest that dispositional factors moderate situational factors’ effect on response to infant crying.     

The signal functions of early infant crying

In this article I evaluate recent attempts to illuminate the human infant cry from an evolutionary perspective. Infants are born into an uncertain parenting environment, which can range from indulgent care of offspring to infanticide. Infant cries are in large part adaptations that maintain proximity to and elicit care from caregivers. Although there is not strong evidence for acoustically distinct cry types, infant cries may function as a graded signal. During pain-induced autonomic nervous system arousal, for example, neural input to the vocal cords increases cry pitch. Caregivers may use this acoustic information, together with other cues, to guide caregiving behavior. Serious pathology, on the other hand, results in chronically and severely abnormal cry acoustics. Such abnormal crying may be a proximate cause of adaptive infant maltreatment, in circumstances in which parents cut their losses and reduce or withdraw investment from infants with low survival chances. An increase in the amount of crying during the first few months of life is a human universal, and excessive crying, or colic, represents the upper end of this normal increase. Potential signal functions of excessive crying include manipulation of parents to acquire additional resources, honest signaling of need, and honest signaling of vigor. Current evidence does not strongly support any one of these hypotheses, but the evidence is most consistent with the hypothesis that excessive early infant crying is a signal of vigor that evolved to reduce the risk of a reduction or withdrawal of parental care.     

Experimental manipulation of emotion regulation changes mothers’ physiological and facial expressive responses to infant crying

This study examined whether instructing mothers to apply emotion regulation strategies can change mothers’ perception and reactivity to infant crying in an experimental within-subject design. Perception of crying, skin conductance level (SCL), facial expressivity, and intended caregiving responses to cry sounds were measured in mothers (N = 101, M = 30.88 years) who received suppression, reappraisal, and no emotion regulation instructions. Reappraisal resulted in lower SCL during exposure to crying and a less negative perception of crying compared to the suppression condition. In contrast, suppression resulted in increased facial expressions of sadness compared to the control condition. Thus, simple instructions on how to reframe thoughts about crying can change mothers’ perception of and reactivity to crying.     

Infant crying,risk status and social support in families of preterm and term infants

Infant crying influences the caregiver and the broader caregiving environment. In this study, cry acoustics were recorded and acoustically analyzed from a sample of fullterm and preterm infants at 40 weeks gestational age, along with the medical risk and socioeconomic status (SES) of the family. Following factor analysis of the cry acoustics, cry factors, along with medical risk and SES were used to predict patterns of social support in the informal (family, friends) and formal (health care providers) social support networks at 44 weeks gestational age. One cry factor, temporal patterning, indicative of the influence of respiratory factors on the infant's cry, predicted a significant amount of variance in the amount of support from the informal network, beyond that predicted from medical risk and SES. Medical risk alone predicted the amount of contact with the formal network, and SES predicted satisfaction with help from the formal network. There were different patterns of relationship between cry acoustics and social support for families with term and preterm infants, indicating that caregivers may interpret and respond to different information in the acoustics of their infants' cries. These findings have implications for understanding how infant crying and behavior influence the caregiving environment and for the clinical management of early cry problems in families with infants differing in risk status. © 1998 John Wiley & Sons, Ltd.     

Young adults’ reactions to infant crying

AimTo determine whether young childless adults show negative emotions and cognitive disturbances when listening to infant crying, compared to other disturbing noises, and whether negative emotions and cognitive disturbances are associated.MethodsWe tested the cognitive performances and emotional reactions of 120 childless participants on a working memory task while being subjected to different disturbing noises including infant crying.ResultsParticipants had the least correct trials on the working memory task, and showed the most negative emotions, when hearing infant crying as compared to the other noises. Participants also showed less positive emotions when hearing infant crying as compared to working in silence. Overall, negative emotions were associated with less correct trials on the working memory task, except in the infant crying condition. Furthermore, cognitive performance and emotional reactions to infant crying were unrelated to personality characteristics.ConclusionNegative emotions and cognitive disturbances may be general adult responses to infant crying that are not limited to parents. These results suggest a broadly present human emotional and cognitive response to infant crying, that may underlie a general predisposition to care for infants in distress.     

Assessment of infant cry: acoustic cry analysis and parental perception

Infant crying signals distress to potential caretakers who can alleviate the aversive conditions that gave rise to the cry. The cry signal results from coordination among several brain regions that control respiration and vocal cord vibration from which the cry sounds are produced. Previous work has shown a relationship between acoustic characteristics of the cry and diagnoses related to neurological damage, SIDS, prematurity, medical conditions, and substance exposure during pregnancy. Thus, assessment of infant cry provides a window into the neurological and medical status of the infant. Assessment of infant cry is brief and noninvasive and requires recording equipment and a standardized stimulus to elicit a pain cry. The typical protocol involves 30 seconds of crying from a single application of the stimulus. The recorded cry is submitted to an automated computer analysis system that digitizes the cry and either presents a digital spectrogram of the cry or calculates measures of cry characteristics. The most common interpretation of cry measures is based on deviations from typical cry characteristics. Another approach evaluates the pattern across cry characteristics suggesting arousal or under-arousal or difficult temperament. Infants with abnormal cries should be referred for a full neurological evaluation. The second function of crying--to elicit caretaking--involves parent perception of the infant's needs. Typically, parents are sensitive to deviations in cry characteristics, but their perception can be altered by factors in themselves (e.g., depression) or in the context (e.g., culture). The potential for cry assessment is largely untapped. Infant crying and parental response is the first language of the new dyadic relationship. Deviations in the signal and/or misunderstanding the message can compromise infant care, parental effectiveness, and undermine the budding relationship. (c) 2005 Wiley-Liss, Inc. MRDD Research Reviews 2005;11:83-93.     

A comprehensive model of women’s social cognition and responsiveness to infant crying: Integrating personality,emotion, executive function,and sleep

Disparate lines of research suggest that women’s (a) emotion regulation and personality, (b) executive function and (c) sleep may be important predictors of mothers’ cry responding in part through their effects on social cognition. However, the extent to which each contributes to cry responding independently remains unknown. We examined this question in a convenience sample of 109 nulliparous undergraduate women. Women completed online surveys to assess personality and emotion dysregulation traits, then visited the lab for a testing session during which they reported on sleep the night before and reactions to videotapes of crying infants and completed computerized working memory and inhibitory control tasks under challenging noise conditions (exposure to traffic and cry sounds). Results indicate that women’s positive personality and higher working memory were associated with higher levels of infant-oriented cry processing (i.e., accurate distress detection, empathy and situational/emotional attributions about distress), which in turn was associated with higher intended responsiveness to infant crying. Emotion dysregulation and deficits in inhibitory control were associated with higher levels of self-oriented cry processing (i.e., anger, anxiety, negative and emotion minimizing attributions in response to infant distress), which in turn was associated with lower cry responsiveness. Short-term sleep deprivation was associated with lower intended responsiveness via the above path from poorer inhibitory control to heightened self-oriented cry processing. Findings suggest that sleep, emotional and cognitive factors are associated with cry processing and subsequent responsiveness independent of one another.     

Social reactions to adult crying: the help-soliciting function of tears

The authors investigated how people believe they respond to crying individuals. Participants (N = 530) read 6 vignettes describing situations in which they encountered a person who either cried or did not cry. Participants reported they would give more emotional support to and express less negative affect toward a crying person than a noncrying person. However, regression analyses revealed that participants judged a crying person less positively than a noncrying person and felt more negative feelings in the presence of a crying person than a noncrying person. The valence of the situation strongly moderated these reactions. Overall, results support the theory that crying is an attachment behavior designed to elicit help from others.     

Recurrence of phonetic responding

This study determined if previously reinforced academic responding recurred when alternative responses were differentially reinforced and subsequently placed on extinction, and whether the magnitude of resurgence was related to the rate of differential reinforcement for the alternative behavior. Three kindergarten students read Greek letters aloud as arbitrary consonant–vowel blends. Resurgence was reliably demonstrated within and across participants, and the magnitude of resurgence was related to the prior rate of differential reinforcement of alternative behavior.     

Effects of continuous and intermittent reinforcement for problem behavior during functional communication training

We evaluated the effectiveness of functional communication training (FCT) in reducing problem behavior and in strengthening alternative behavior when FCT was implemented without extinction. Following the completion of functional analyses in which social-positive reinforcement was identified as the maintaining variable for 5 participants' self-injurious behavior (SIB) and aggression, the participants were first exposed to FCT in which both problem behavior and alternative behavior were reinforced continuously (i.e., on fixed-ratio [FR] 1 schedules). During subsequent FCT conditions, the schedule of reinforcement for problem behavior was made more intermittent (e.g., FR 2, FR 3, FR 5, etc.), whereas alternative behavior was always reinforced according to an FR 1 schedule. Results showed that 1 participant's problem behavior decreased and alternative behavior increased during FCT when both behaviors were reinforced on FR 1 schedules. The remaining 4 participants shifted response allocation from problem to alternative behavior as the schedule of reinforcement for problem behavior became more intermittent. These results suggest that individuals might acquire alternative responses during FCT in spite of inconsistencies in the application of extinction, although even small errors in reinforcement may compromise treatment effects.     

Changes in the affect of infants before and after episodes of crying

This study examined the affect of infants just before the onset of crying and just after crying stopped. Two infants (between 7 and 14 months old) were observed longitudinally. In total, 102 crying episodes were analyzed. The infants displayed negative affect almost always just before starting to cry and soon after crying terminated. However, there were exceptions. Positive affect was observed. These were crying behaviors that the mother identified as “fake crying” or “emergence of fake crying”. These data indicate that, although normally infant affect just before and right after crying is negative, infants also can exhibit positive affect when they show fake crying. Infants who are capable of fake crying might communicate successfully with their caregivers.     

Persistence during and resurgence following noncontingent reinforcement implemented with and without extinction

Noncontingent reinforcement (NCR) is typically implemented with extinction (EXT) for destructive behavior reinforced by social consequences and without EXT for destructive behavior reinforced by sensory consequences. Behavioral momentum theory (BMT) predicts that responding will be more persistent, and treatment relapse in the form of response resurgence more likely, when NCR is implemented without EXT due to the greater overall rate of reinforcement associated with this intervention. We used an analogue arrangement to test these predictions of BMT by comparing NCR implemented with and without EXT. For two of three participants, we observed more immediate reductions in responding during NCR without EXT. However, for all participants, NCR without EXT produced greater resurgence than NCR with EXT when we discontinued all reinforcers during an EXT Only phase, although there was variability in response patterns across and within participants. Implications for treatment of destructive behavior using NCR are discussed.     

Approach-avoidance responses to infant facial expressions in nulliparous women: Associations with early experience and mood induction

Infant expressions are important signals for eliciting caregiving behaviors in parents. The present study sought to test if infant expressions affect adults’ behavioral response, taking into account the role of a mood induction and childhood caregiving experiences. A modified version of the Approach Avoidance Task (AAT) was employed to study nulliparous female university students’ implicit responses to infant faces with different expressions. Study 1 showed that sad, neutral and sleepy expressions elicit a tendency for avoidance, while no tendency for approach or avoidance was found for happy faces. Notably, differences between approach and avoidance response latencies for sad faces and participants’ negative caregiving experiences were positively correlated (r = 0.30, p = 0.04, Bonferroni corrected), indicating that individuals who experienced insensitive parental care show more bias toward sad infant faces. In Study 2, we manipulated participants' current mood (inducing sad and happy mood by asking to recall a happy or sad event of their recent life) before the AAT. Results showed that sad mood enhanced the bias toward sad faces that is buffered by positive mood induction. In conclusion, these findings indicate that implicit approach avoidance behaviors in females depend on the emotional expression of infant faces and are associated with childhood caregiving experiences and current mood.     

Characteristics and response-displacement effects of shock-generated responding during negative reinforcement procedures: pre-shock responding and post-shock aggressive responding

Bar-pressing (Experiment I) or key-pressing (Experiments II and III) responses of monkeys were reinforced according to a fixed-interval schedule of negative reinforcement: the first response after a fixed interval of time terminated regularly spaced shocks for a fixed time designated as the reinforcement period. During extinction, shocks continued during the reinforcement period. That there were two types of responding generated by shock alone was indicated by (1) the level of responding maintained during extinction relative to conditions without shock, (2) the stability of two between-shock response patterns across reinforcement and extinction conditions, and (3) the development of these two between-shock patterns without a history of reinforcement. Subjects developed either a pre-shock or a post-shock response pattern when only the bar was available. However, when both a bite tube, an operandum requiring an aggressive topography, and a recessed key, an operandum that did not require an aggressive topography, were provided, the post-shock pattern was observed in tube biting and the pre-shock pattern was observed in key pressing. Removal of the bite tube produced post-shock key responding similar to that observed when only the bar was available. The displacement of post-shock, aggression-motivated responding confirmed the confounding effect of shock-generated responding in negative reinforcement procedures, and suggests that the use of concurrent response alternatives would reduce such confounding.     

The effects of variable-time delivery of food items and praise on problem behavior reinforced by escape

Prior research indicates that reinforcement of an appropriate response (e.g., compliance) can produce concomitant reductions in problem behavior reinforced by escape when problem behavior continues to produce negative reinforcement (e.g., Lalli et al., 1999). These effects may be due to a preference for positive over negative reinforcement or to positive reinforcement acting as an abolishing operation, rendering demands less aversive and escape from demands less effective as negative reinforcement. In the current investigation, we delivered a preferred food item and praise on a variable-time 15-s schedule while providing escape for problem behavior on a fixed-ratio 1 schedule in a demand condition for 3 participants with problem behavior maintained by negative reinforcement. Results for all 3 participants showed that variable-time delivery of preferred edible items reduced problem behavior even though escape continued to be available for these responses. These findings are discussed in the context of motivating operations.