The development of visual categorization based on high-level cues.

This study investigated the development of rapid visual object categorization. N = 20 adults (Experiment 1), N = 21 five to six-year-old children (Experiment 2), and N = 140 four-, seven-, and eleven-month-old infants (Experiment 3; all predominantly White, 81 females, data collected in 2013-2020) participated in a fast periodic visual stimulation electroencephalographic task. Similar categorization of animal and furniture stimuli emerged in children and adults, with responses much reduced by phase-scrambling (R2 = .34-.73). Categorization was observed from 4 months, but only at 11 months, high-level cues enhanced performance (R2 = .11). Thus, first signs of rapid categorization were evident from 4 months, but similar categorization patterns as in adults were recorded only from 11 months on.

Processing of visual stimuli following infant directed speech: Attention-guiding effects of unfamiliar speech.

This study investigates attention modulation as a function of infant directed (ID) versus adult directed (AD) speech in seven-month-old infants using electroencephalographic measures. In three experiments, infants were presented with either ID speech or AD speech as stimuli, followed by highly variable images of inanimate objects as targets. In Experiment 1 (N = 18), images were preceded by ID or AD speech with semantic content ("Look here"). Contrary to hypothesis, targets preceded by AD speech elicited increased amplitude of the Negative central (Nc) component compared to targets preceded by ID speech, indicating increased attention. Experiment 2 (N = 23) explored whether ID versus AD speech influences attention allocation also without semantic content. The same targets were either preceded by human voice sounds without semantic content ("Uh-Ah") following the prosody of either ID or AD speech register. No differences in attention allocation or object processing were observed. Experiment 3 (N = 18) contrasted ID speech with and without semantic content and found enhanced attention allocation following stimuli without semantic content, but increased object processing following stimuli with semantic content. Overall, the effects observed here are consistent with the idea that less familiar speech stimuli increase attention for subsequent objects. Semantic content of stimuli increased the depth of object processing in 7-month-olds.

From co-regulation to self-regulation: Maternal soothing strategies and self-efficacy in relation to maternal reports of infant regulation at 3 and 7 months.

This study, conducted in Germany, examines the role of maternal soothing strategies to explain the association of maternal self-efficacy with infant regulation (crying and sleeping behavior). Questionnaire data of 150 mothers, living in Germany, with mixed ethnic and educational backgrounds were collected when infants were 3 and 7 months old. Two types of maternal soothing strategies were distinguished: close soothing, involving close physical and emotional contact, and distant soothing, involving physical and emotional distancing from the infant. A cross-sectional SEM at 3 months indicated that maternal self-efficacy is associated with reported infant regulation through distant soothing strategies. Low maternal self-efficacy was associated with frequent maternal use of distant soothing, which in turn was related to reported infant regulation problems, that is, non-soothability and greater crying frequency. Frequent use of close soothing was associated with reported infant sleeping behavior, that is, frequent night-time awakenings. A longitudinal SEM further indicated that the effects of close soothing persisted at least until the infants' age of 7 months. The study showed how low maternal self-efficacy, increased use of distant soothing, and reported early infant regulation problems are intertwined and that, due to their persisting positive effect on infant soothability, close soothing better supports infant development.

Este estudio examina el papel de las estrategias calmantes maternas para explicar la asociación entre auto efectividad materna y la regulación del infante (comportamiento de llanto y de dormir). Información de cuestionario de N = 150 madres de trasfondos étnicos y educativos mixtos se recogió cuando los infantes tenían tres y siete meses de nacidos. Dos tipos de estrategias calmantes maternas se identificaron: estrategia calmante cercana, la cual trata del contacto físico y emocional cercano, y estrategia calmante distante, la cual trata del distanciamiento físico y emocional con el infante. Un estudio de Modelo de Ecuación Estructural (SEM) transversal a los tres meses indicó que la auto efectividad materna se asocia con la reportada regulación del infante a través de estrategias calmantes distantes. La baja auto efectividad materna se asoció con el frecuente uso materno de estrategias calmantes distantes, lo cual a su vez se relacionó con los reportados problemas de regulación del infante, tales como el no calmarse y la mayor frecuencia del llanto. El uso frecuente de estrategias calmante cercanas se asoció con el reportado comportamiento de dormir del infante, tal como el frecuente despertar nocturno. Un estudio de tipo SEM longitudinal indicó más allá que los efectos de las estrategias calmantes cercanas persistían por lo menos hasta que los infantes tenían siete meses de edad. El estudio mostró cómo la baja auto efectividad materna, el uso incrementado de estrategias calmantes distantes, así como los reportados tempranos problemas de regulación del infante están entremezclados y que, debido a su persistente efecto positivo en calmar al infante, las estrategias calmantes cercanas apoyan mejor el desarrollo del infante.

Cette étude examine le rôle des stratégies maternelles d'apaisement pour expliquer le lien de l'auto-efficacité maternelle avec la régulation du nourrisson (pleurs et comportement du sommeil). Des données d'une questionnaire de N = 150 mères issues de milieux ethniques et éducationnels différents ont été recueillies quand les nourrissons avaient trois et sept mois. Deux types de stratégies maternelles d'apaisement ont été distingués: l'apaisement proche, avec un contact physique et émotionnel proche, et l'apaisement distant, avec une distanciation physique et émotionnelle du nourrisson. Une coupe transversale SEM à trois mois a indiqué que l'auto-efficacité maternelle est liée à la régulation infantile signalée au travers de stratégies d'apaisement distantes. Une auto-efficacité maternelle faible était liée à l'utilisation maternelle fréquente de stratégies d'apaisement, qui à son tour était liée aux problèmes signalés de régulation du nourrisson, comme par exemple le fait de ne pas pouvoir être apaisé ou une fréquence de pleurs plus grande. L'utilisation fréquente de stratégies d'apaisement proche était liée au comportement de sommeil du nourrisson signalé, comme par exemple des réveils nocturnes fréquents. Un SEM longitudinal a de surcroit indiqué que les effets de stratégies d'apaisement proches persistaient au moins jusqu'à l'âge de sept mois des nourrissons. L'étude a montré comment l'auto-efficacité maternelle faible, une utilisation accrue de stratégies d'apaisement distant et les problèmes signalés de régulation précoce des nourrissons sont imbriqués et que, du fait de leur effet positif persistant sur l'apaisement du nourrisson, les stratégies d'apaisement proches soutiennent mieux le développement du nourrisson.

When it pays off to take a look: Infants learn to follow an object's motion with their gaze-Especially if it features eyes.

Social cues and instrumental learning are two aspects potentially fostering early gaze following. We systematically investigated the influence of social features (schematic eyes vs. reverse-contrast eyes) and gaze-contingent reinforcement (elicited vs. not elicited) on 4-month-olds' learning to attend to gaze-cued objects. In 4 experiments, we tested infants' (N = 74) gaze following of a turning block with schematic or reverse-contrast eyes. In Experiments 1 and 2, infants could elicit an attractive animation in a training phase via interactive eye tracking by following the turning of the block. Experiments 3 and 4 were yoked controls without contingent reinforcement. Infants did not spontaneously follow the motion of the block. Four-month-olds always followed the block after training when it featured schematic eyes. When the block featured reverse-contrast eyes, the training phase only affected infants' looking behavior without reinforcement. While speaking to a certain degree of plasticity, findings stress the importance of eyes for guiding infants' attention.

Maternal self-efficacy development from pregnancy to 3 months after birth.

The present study uses a prospective longitudinal study design to investigate the development of maternal self-efficacy in the transition phase to parenthood, drawing on a large sample of socially and/or culturally disadvantaged families (N = 292). Parity, maternal education, migration, informal and formal social support are considered as potential predictors. Results indicate that previous birth experience, being born abroad, and higher levels of formal and informal social support during pregnancy jointly predict higher levels of maternal self-efficacy three months after birth. First-time mothers and mothers born in Germany (where the study was conducted) benefit more from formal support than mothers with previous experience and mothers born outside of Germany. Overall, maternal self-efficacy increases significantly. Implications for prenatal maternal care are discussed.

El presente estudio usa un diseño de estudio longitudinal potencial para investigar el desarrollo de la auto efectividad materna en la fase de transición a ser madre. Usando una muestra grande de familias desfavorecidas social y/o culturalmente (N = 292). Se consideran como potenciales factores de predicción la paridad, la educación materna, la migración, y el apoyo social informal y formal. Los resultados indican que una previa experiencia de dar a luz, el haber nacido en el extranjero, así como altos niveles de apoyo social formal e informal durante el embarazo predicen en conjunto altos niveles de auto efectividad materna tres meses después del parto. Las madres primerizas y las madres nacidas en Alemania (donde se llevó a cabo el estudio) se beneficiaron más del apoyo formal que las madres con experiencia previa y las madres nacidas fuera de Alemania. En general, la auto efectividad materna aumentó significativamente. Se discuten las implicaciones para el cuidado materno prenatal.

Cette étude utilise un plan d'étude prospectif longitudinal pour se pencher sur le développement de l'auto-efficacité maternelle dans la phase de transition à la parenté, en utilisant un grand échantillon de familles socialement et/ou culturellement défavorisées (n = 292). La parité, l'éducation maternelle, la migration, le soutien social informel et formel sont considérés comme des prédicteurs potentiels. Les résultats indiquent qu'une expérience de la naissance antérieure, le fait d'être née à l'étranger et des hauts niveaux de soutien social formel et informel durant la grossesse prédisent ensemble des niveaux élevés d'auto-efficacité maternelle après la naissance. Les mères étant mères pour la première fois et les mères nées en Allemagne (où l'étude a été faite) ont plus bénéficié d'un soutien formel que les mères ayant déjà donné naissance à un enfant et que les mères nées en dehors de l'Allemagne. Dans l'ensemble l'auto-efficacité maternelle a augmenté de manière importante. Les implications pour le soin maternel prénatal sont discutées.

The effect of intestinal glucose load on neural regulation of food craving.

Objectives: Excess sugar consumption, particularly in the form of sweetened beverages, has been identified as a pivotal contributor to the epidemic of obesity and associated metabolic disorders. However, the impact of sugar-sweetened beverages on food craving is still inconclusive. Therefore, the present study aimed to specifically investigate the effects of an intestinal glucose load on neural processing of food cues. Methods: Using a single-blind fMRI design, 26 normal-weight women were scanned on two occasions, after receiving either a glucose or water infusion directly into the stomach using a nasogastric tube, without being aware of the type of infusion. Participants had to either view neutral and food images, or were asked to distract themselves from these images by solving an arithmetic task. Results: In response to viewing high-caloric food cues, we observed increased activation in reward-related brain areas. During food distraction, fronto-parietal brain regions were recruited, which are commonly related to attentional deployment and hedonic valuation. Furthermore, activity in the dorsolateral prefrontal cortex showed increased functional connectivity with the insula and was correlated with subjective craving levels to food cues. Despite an increase of blood glucose levels in response to the glucose compared to the water infusion, neither subjective food craving nor neural regulation of food craving showed significant differences. Conclusions: These findings support a decreased satiation effect of sweet beverages, as intestinal glucose ingestion and signalling showed no significant effect on cortical brain circuits associated with food craving. This trial was registered at clinicaltrials.gov as NCT03075371.

Effects of Reinforcement Learning on Gaze Following of Gaze and Head Direction in Early Infancy: An Interactive Eye-Tracking Study.

The current four experiments investigated gaze following behavior in response to gaze and head turns in 4-month-olds and how reinforcement learning influences this behavior (N = 99). Using interactive eye tracking, infants' gaze elicited an animation whenever infants followed a person's head or gaze orientation (Experiment 1.1, 2.1 and 2.2) or looked at the opposite side (Experiment 1.2). Infants spontaneously followed the direction of a turning head with and without simultaneously shifted gaze direction (Cohen's d: 0.93-1.05) but not the direction of isolated gaze shifts. We only found a weak effect of reinforcement on gaze following in one of the four experiments. Results will be discussed with regard to the impact of reinforcement on the maintenance of already existing gaze following behavior.

Preschoolers' Motivation to Over-Imitate Humans and Robots.

From preschool age, humans tend to imitate causally irrelevant actions-they over-imitate. This study investigated whether children over-imitate even when they know a more efficient task solution and whether they imitate irrelevant actions equally from a human compared to a robot model. Five-to-six-year-olds (N = 107) watched either a robot or human retrieve a reward from a puzzle box. First a model demonstrated an inefficient (Trial 1), then an efficient (Trial 2), then again the inefficient strategy (Trial 3). Subsequent to each demonstration, children copied whichever strategy had been demonstrated regardless of whether the model was a human or a robot. Results indicate that over-imitation can be socially motivated, and that humanoid robots and humans are equally likely to elicit this behavior.

Getting the mouse out of the box: Tool innovation in preschoolers.

Following the literature, children younger than 8 years rarely innovate a tool. Theories on innovation and comparative research on tool manufacturing suggest that children's performance may depend on the task context. The current study explored whether preschool children's poor performance in past research could be attributed to short time limits and the required manufacturing method. In four experiments, 5-year-olds needed to retrieve a toy from a tube by manufacturing a novel tool and using it successfully. The type of potentially functional materials varied among the experiments. Cumulative innovation rate was analyzed after 1 and 10 min. The 5-year-olds rarely innovated if merely "reshape" (modifying the material's shape) was offered as a potentially successful manufacturing method even when they had up to 10 min to complete the task (21%; Experiment 1). The vast majority of 5-year-olds succeeded if multiple manufacturing strategies were functional, but only if children had up to 10 min to complete the task (93%; Experiment 2). The innovation rate remained high if "detach" (separating material from a substrate) was not available (76%; Experiment 3) and if "subtract" (removing something from a material) was the only functional manufacturing method (71%; Experiment 4). Our findings suggest that even preschool-aged children are "good innovators" if (a) they have enough time and (b) manufacturing methods other than reshape can be used to solve the problem. However, they seem to struggle if (a) they have only 1 min to complete the task and (b) solving the task requires them to reshape a material.

Contrasting Social and Cognitive Accounts on Overimitation: The Role of Causal Transparency and Prior Experiences.

Three experiments (N = 100) examine the influence of causal information on overimitation. In Experiment 1, a transparent reward location reveals that the reward is unaffected by nonfunctional actions. When 5-year-olds observe an inefficient and subsequently an efficient strategy to retrieve a reward, they show overimitation in both phases-even though the reward is visible. In Experiment 2, children observe first the efficient then the inefficient strategy. The latter is always demonstrated communicatively, whereas the efficient strategy is presented communicatively (2a) or noncommunicatively (2b). Regardless of whether the efficient strategy is emphasized through communication or not, most children do not switch from the efficient to the inefficient strategy. Depending on the situation, children base their behavior on social motivations or causal information.

How Toddlers Acquire and Transfer Tool Knowledge: Developmental Changes and the Role of Executive Functions.

This report investigates tool learning and its relations to executive functions (EFs) in toddlers. In Study 1 (N = 93), 18-, 20-, 22-, and 24-month-old children learned equally well to choose a correct tool from observation, whereas performance based on feedback improved with age. Knowledge transfer showed significant progress after 22 months of age: Older children ignored irrelevant features more easily and adjusted their behavior more flexibly. Study 2 (N = 62) revealed that spontaneous transfer in 22- to 24-month-olds was related to set-shifting skills and response inhibition. Flexible adaptation to feedback correlated with working-memory capacity. These findings suggest that toddlerhood is a highly dynamic phase of tool learning and that EFs are related to transfer performance at this age.

The role of social interaction and pedagogical cues for eliciting and reducing overimitation in preschoolers.

The tendency to imitate causally irrelevant actions is termed overimitation. Here we investigated (a) whether communication of a model performing irrelevant actions is necessary to elicit overimitation in preschoolers and (b) whether communication of another model performing an efficient action modulates the subsequent reduction of overimitation. In the study, 5-year-olds imitated irrelevant actions both when they were modeled by a communicative and pedagogical experimenter and when they were modeled by a non-communicative and non-pedagogical experimenter. However, children stopped using the previously learned irrelevant actions only when they were subsequently shown the more efficient way to achieve the goal by a pedagogical experimenter. Thus, communication leads preschoolers to adapt their imitative behavior but does not seem to affect overimitation in the first place. Results are discussed with regard to the importance of communication for the transmission of cultural knowledge during development.

The Development of Global-Level Categorization: Frequency Tagging EEG Responses.

Adults and infants form abstract categories of visual objects, but little is known about the development of global categorization. This study aims to characterize the development of very fast global categorization (living and non-living objects) and to determine whether and how low-level stimulus characteristics contribute to this response. Frequency tagging was used to characterize the development of global-level categorization in N = 69 infants (4, 7, 11 months), N = 22 children (5-6 years old), and N = 20 young adults. Images were presented in an oddball paradigm, with a category change at every fifth position (AAAABAAAABA…). Strong and significant high-level categorization was observed in all age groups, with reduced responses for phase-scrambled control sequences (R2 = 0.34-0.73). No differences between the categorization of living and non-living targets were observed. These data demonstrate high-level visual categorization as living and non-living from four months to adulthood, providing converging evidence that humans are highly sensitive to broad categorical information from infancy onward.

Psychometric Properties of the Chinese Version of Multidimensional Scale of Perceived Social Support.

Aim: The purpose of this study is to revise the Multidimensional Scale of Perceived Social Support and validate the reliability and validity of the Chinese version of the scale for Chinese college students. Methods: A total of 2830 Chinese college students were tested with the Chinese version of MSPSS. Four weeks after the formal test, 80 randomly selected subjects were retested. Results: The item analysis shows that the total correlation between each item and the total score is 0.525~0.806, higher than the standard of 0.30; the difference between the high group and the low group in all items has reached the significant level. Exploratory factor analysis shows that the scale includes three factors with a cumulative contribution rate of 69.185%; confirmatory factor analysis shows that the data is well fitted. The total score and three factors of social support scale are positively correlated with self-esteem, with a correlation value of 0.367~0.433, and negatively correlated with depression and anxiety, with correlation values of -0.356~-0.428 and -0.253~-0.308; all are significant at 0.01 level. The internal consistency coefficient of the scale is 0.911, the split-half coefficient is 0.865, and the test-retest coefficient is 0.837-0.914. Conclusion: The Chinese version of the MSPSS has good reliability and validity, and is suitable for Chinese college students.

The role of perinatal maternal symptoms of depression, anxiety and pregnancy-specific anxiety for infant's self-regulation: A prospective longitudinal study.

BACKGROUND: Maternal symptoms of anxiety and depression are highly prevalent during pregnancy and postpartum and have the potential to impact fetal development and offspring behavior. However, research on the effects of fetal exposure to maternal subclinical affective symptoms on infant self-regulation is still lacking. Self-regulation provides a fundamental precondition for healthy development and overall life success whereas dysfunctional self-regulation can lead to behavioral problems, poor academic achievement, social rejection, and physical/mental disorders. During pregnancy and infancy, children largely depend upon their mothers in order to successfully regulate their internal states. Given the high prevalence of mothers suffering from anxiety and depressive symptoms during pregnancy and after childbirth, the aim of the present study is to explore how maternal affective symptoms change during the pre- and postnatal period, and how measures obtained in pregnancy and beyond impact self-regulation in infants, as indicated by crying-, sleeping-, and/or feeding problems. METHODS: This prospective longitudinal study investigates the effects of maternal symptoms of depression, anxiety, and pregnancy-specific anxiety on infant's self-regulation in N = 225 mother-infant dyads. Maternal affective symptoms were examined at five prenatal and three postnatal time-points using the Edinburgh Postnatal Depression Scale (EPDS), the State-Trait Anxiety Inventory (STAI) and the Pregnancy Related Anxiety Questionnaire Revised (PRAQ-R2). Infant's self-regulation was assessed twice - at the age of three and six months - using the Crying Feeding Sleeping Scale (SFS). RESULTS: Maternal pregnancy-specific anxiety was the most significant predictor for infant self-regulatory problems. It predicted crying-, sleeping, and feeding problems and explained up to 18 % of the variance. Even when controlling for maternal postpartum affective symptoms, pregnancy-specific anxiety remained a significant predictor for infant self-regulation problems. LIMITATIONS: Rather homogenous sample (high socioeconomic status). Data based on maternal reports of infant behavior. CONCLUSIONS: Our results suggest that fetal exposure to maternal affective symptoms - specifically pregnancy-related anxiety - plays a substantial role in the development of infant self-regulation problems, potentially mediated by epigenetic modifications. Importantly, even though maternal symptoms of depression and anxiety only reached subclinical levels, they were predictive for infant crying-, sleeping-, and feeding problems. Our findings underline the importance of early prevention and clearly tailored interventions during pregnancy and postpartum to prevent adverse outcome for mother, child and family.

How 24-month-olds form and transfer knowledge about tools: the role of perceptual, functional, causal, and feedback information.

This study investigated cognitive processes underlying tool use and knowledge transfer in 24-month-olds (N=123). Following a demonstration, participants chose a tool to reach a reward in a training transfer paradigm. Differing from previous research, various aspects considered to be relevant for children's performance were integrated within the same study design, and performance was examined on a trial-by-trial basis. More specifically, we analyzed how the following aspects affected toddlers' learning and transfer performance: causal information, degree of conflict between perceptually salient and functionally relevant information, and feedback information. Children with access to causal information outperformed children without corresponding information during the training and transfer phases. Perceptual conflict had a negative impact on transfer performance. However, children were quickly able to correct their choices based on feedback. Results are discussed in the light of recent accounts on tool use understanding.

Head and eye movements affect object processing in 4-month-old infants more than an artificial orientation cue.

This study investigates the effects of attention-guiding stimuli on 4-month-old infants' object processing. In the human head condition, infants saw a person turning her head and eye gaze towards or away from objects. When presented with the objects again, infants showed increased attention in terms of longer looking time measured by eye tracking and an increased Nc amplitude measured by event-related potentials (ERP) for the previously uncued objects versus the cued objects. This suggests that the uncued objects were previously processed less effectively and appeared more novel to the infants. In a second condition, a car instead of a human head turned towards or away from objects. Eye-tracking results did not reveal any significant difference in infants' looking time. ERPs indicated only a marginally significant effect in late slow-wave activity associated with memory encoding for the uncued objects. We conclude that human head orientation and gaze direction affect infants' object-directed attention, whereas movement and orientation of a car have only limited influence on infants' object processing.

The role of socio-cultural background and child age for parental regulation strategies and children's self-regulation: A comparison between Germany, Chile, and El Salvador.

This study compared parental regulation strategies and children's self-regulation in three different countries (Germany, Chile, El Salvador). N = 300 primary caregivers of 1- to 3-year-olds filled out a parental questionnaire (IMpulse-MAnagement in the caregiver-child dyad, IMMA; Pauen et al., 2019) assessing (a) socio-demographic variables, (b) parental ideas and goals regarding children's self-regulation skills, (c) children's self-regulation strategies in dealing with internal challenges or demands, and (d) caregiver's regulation strategies. Age-group comparisons revealed that (1) children increased compliance and verbal negotiation with their caregivers as they grow older, and (2) parents adapted their regulation strategies to the age of the child. Country-group comparisons further indicated substantial similarities and differences between countries with respect to (3) how parents expected children to deal with requests and prohibitions, as well as with their own needs, feelings, and impulses, (4) how children responded to goal-frustration and parental demands, and (5) which regulatory strategies parents used to support their offspring. These exploratory findings are discussed in the light of current models on cultural learning, parent-child interactions, and child self-regulation development.

Infants' fast neural categorization of artificial objects: The impact of stimulus and task characteristics.

This study explores how 7-month-old infants categorize graphical images varying in basic perceptual features by using a fast periodic visual stimulation (FPVS) task. Most participants were Caucasian and their parents had a higher education, but the family's socioeconomic background was mixed. Experiment 1 (N = 23) tested brain responses to configurational versus scrambled image sequences and found an oddball effect for both conditions, with configurational information leading to stronger neural responses. Experiment 2 explored the role of category learning for later FPVS performance: Group A (control; n = 22) participated in the FPVS categorization task only. Group B (fam; n = 21) was first familiarized with standard exemplars. Group C (fam + contrast; n = 29) was presented an additional exemplar of the contrasting category before the FPVS task. Electroencephalogram analyses revealed a decrease in Nc amplitude (measuring attention) throughout the familiarization phase. Long looking at the out-of-category exemplar in Group C indicated infants' visual interest. Brain responses in the subsequently presented FPVS were strong but did not differ between groups. This highlights the ability of the infant brain to organize perceptual input very rapidly without requiring familiarization but also points to the need for further studies exploring brain processes associated with infants' category learning and categorization at the brain level. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

[Assessment of temperament with the Infant Behavior Questionnaire Revised (IBQ-R) - the psychometric properties of a German version]. / Erfassung des frühkindlichen Temperaments mit dem Infant Behavior Questionnaire Revised.

OBJECTIVE: The Infant Behavior Questionnaire Revised (IBQ-R; Gartstein & Rothbart, 2003) is one of the most common parent-report instruments for assessing infant temperament. This study evaluated the psychometric properties of a German version. METHOD: We studied item characteristics, internal consistency, and descriptive statistics for all 14 scales in a sample of 7- to 9-month-old infants and their mothers (N = 119). Factor analysis was conducted to identify higher-order relationships between the scales. RESULTS: Item analysis showed mixed corrected item-total correlations. Internal consistencies were all moderate to high. Results of the factor analysis confirmed the two dimensions of Surgency/Extraversion and Negative Affectivity, whereas the dimension Orienting/Regulation was not replicated. In contrast to the American sample, activity level in the German sample loaded on the factor Negative Affectivity. The scales low intensity pleasure and soothability, which loaded on factor Orienting/Regulation in the original version, showed substantial loadings on both dimensions Surgency/Extraversion and Negative Affectivity (inverted), whereas the scale duration of orienting was located on the factor Surgency/Extraversion. CONCLUSIONS: The German version of the IBQ-R provides a satisfying instrument for investigating infant temperament. However, further work is needed to improve the methodological quality of the questionnaire. Further research should especially focus on the factor structure of infant temperament. We suggest developing a shorter version and testing it with a larger and more diverse sample.