Deaf and hearing adults' recollections of childhood and beyond

Whereas the average age of earliest reportable personal memory among adults is 3 to 3 1/2, there is considerable individual and group variability in the age of earliest autobiographical memory. Some of the variability is thought to be attributable to differential narrative socialisation. In the present research we tested the hypothesis that by virtue of later exposure to language, individuals born deaf to hearing parents will have earliest memories from later in life, relative to hearing individuals. The average age of single earliest identifiable memory for adults who are deaf and adults who are hearing did not differ. Nevertheless, adults who are deaf were found to have less dense representations of early autobiographical memories and to include in their narrative reports fewer categories of information, including visual-spatial information, relative to hearing adults. Participants' ratings of their memories on a number of dimensions were found to have low utility in predicting the content of autobiographical reports from both early and later in life (i.e., after age 10 years).     

Adults who are more anxious and were anxiously attached as children report later first memories

Here, we examined retrospective reports of adults’ earliest autobiographical memory, the age of this report and whether the reported age was associated with exposure to early life adversity, current anxiety and childhood attachment. Across four studies, we found that reporting a later ‘earliest’ memory was associated with higher self-reported anxiety in both American (Studies 1, 2 and 4) and Australian (Study 3) samples. Furthermore, in Studies 2–4, we found that reporting a later earliest memory uniquely predicted anxiety when controlling for number of adverse childhood events (a risk factor for the development of anxiety). In Study 4, we established that this relation is partially mediated by childhood anxious attachment. Although we consistently demonstrated that later earliest memories were associated with current anxiety, we found little evidence for a relation between reported age at the time of earliest memory and childhood adversity. We also found no evidence of gender differences in the associations of interest. These results suggest that poorer memory of early childhood is associated with greater childhood anxious attachment and anxiety in adulthood. The implications of this work are discussed in terms of the adaptive nature of autobiographical memory and the development of a coherent life narrative.     

自传体记忆的开端:最早记忆的诱发与评估

童年期遗忘指人们无法回忆起生命最初几年的事情。最早记忆是童年期遗忘开始消退和自传体记忆发生的标志,诸多研究表明成人的最早记忆一般介于3~4岁间,儿童有更早的最早记忆。最早记忆的诱发方法,包括单一最早记忆法、线索词法、穷举法和生命全程法;最早记忆的评估方法,包括自陈式的记忆现象学问卷测量,以及针对记忆叙述内容的编码分析。未来研究要加强纵向研究,追踪最早记忆随年龄而发生的变化;展开特殊人群的研究;完善测量工具;探究早期记忆保持和遗忘的机制。     

Autobiographical narratives of deaf and hearing adults: an examination of narrative coherence and the use of internal states

To examine the impact of early linguistic experiences on later verbal report of autobiographical memory, 13 hearing adults and 13 deaf adults born to hearing parents described events that occurred before and after the age of 10 years. The contextual, temporal, and thematic coherence of the narratives was rated. The use of emotional, perceptual, mental, and physiological states was also recorded. There were differences in the coherence of the narratives and use of internal states according to the age at which the events occurred. There were no group differences in coherence, but hearing adults provided longer narratives than deaf adults. When narrative length was controlled, deaf adults included more emotional states than hearing adults. Results suggest that early unavailability of language does not impact the coherence of adults' narratives, although certain features of linguistic expression specific to ASL may result in greater saturation of emotional states references in autobiographical narratives of deaf adults.     

Autobiographical narratives of deaf and hearing adults: An examination of narrative coherence and the use of internal states

To examine the impact of early linguistic experiences on later verbal report of autobiographical memory, 13 hearing adults and 13 deaf adults born to hearing parents described events that occurred before and after the age of 10 years. The contextual, temporal, and thematic coherence of the narratives was rated. The use of emotional, perceptual, mental, and physiological states was also recorded. There were differences in the coherence of the narratives and use of internal states according to the age at which the events occurred. There were no group differences in coherence, but hearing adults provided longer narratives than deaf adults. When narrative length was controlled, deaf adults included more emotional states than hearing adults. Results suggest that early unavailability of language does not impact the coherence of adults’ narratives, although certain features of linguistic expression specific to ASL may result in greater saturation of emotional states references in autobiographical narratives of deaf adults.     

Early memories in young adults from separated and non-separated families

Two studies investigated the earliest memories of New Zealand European young adults (N = 80, Study 1 and N = 120, Study 2) from separated and non-separated families. Participants' earliest memories were assessed for age, for density (how far apart the memories were, Study 2) and for narrative coherence of the memories. Questionnaires were designed to investigate the role of changes in family structure, for example, in the number of adults in the participants' households and the timing of the parental separation. Study 2 further investigated stress and painful divorce-related feelings as additional variables in adjustment after divorce. No overall differences in age of earliest memory emerged between young adults from separated and non-separated parents. Within the group from separated parents, however, memories were earlier when parents separated early in the child's life (<age 7), which related to having extended family ties and more coherent memory narratives from early childhood (Study 2). Participants from separated families reported earlier but sparser memories when they reported higher levels of stress and painful feelings about the separation. The development of early autobiographical memories and the offset of childhood amnesia are discussed via transition and social interaction theories of autobiographical memory.     

Me Too!: Social modelling influences on early autobiographical memories

To investigate the malleability of early memories, 200 participants were asked to describe their earliest memories. Before doing so, approximately half were exposed to confederates who described very early memories such as their first steps or a second birthday party, while others were asked only to think about their earliest memories for two minutes before beginning writing. Participants who were exposed to confederate very early memories produced memories that were nearly a year younger on average than the memories reported by controls (2.99 years vs. 3.96 years). Additionally, when participants in the memory discussion condition were asked about an early event that a confederate had recounted they were more confident than controls that they could recall the event in their own lives. These results indicate that autobiographical memories for early events are quite susceptible to social influence and that simply hearing the very early memories of others can alter autobiographical memory. Copyright © 2008 John Wiley & Sons, Ltd.     

The relation of the conceptual self to recent and distant autobiographical memories

Based on the self-memory system model (SMS; Conway, Singer, & Tagini, 2004) of autobiographical memory, this study uses a large sample of young and middle-aged adults to investigate the relation between individuals’ current self-characteristics and the content of both their earliest childhood memory and a recent memory. In the first session, participants’ current self-characteristics were assessed. In the second session, individuals provided a written narrative of their earliest childhood memory and a more recent memory (within-participants design) and rated the self themes present in each memory. In keeping with the SMS model, findings show that current self-characteristics were reflected in individuals’ memories. As predicted, however, recent memories were more frequently linked to current self-characteristics than were earliest memories. All six current self-characteristics predicted the inclusion of these themes in recent memories, but only four self-characteristics were associated with memory themes in earliest memories. The relation between current self-characteristics and memory themes did not differ across young and middle-aged adults, suggesting developmental stability in these relations. Findings provide general support for the SMS model but also suggest possibilities for its extension and refinement.     

Earliest memories in Israeli kibbutz upbringing: it is parental engagement that makes a difference

Culture and parenting shape the ability to recall early childhood experiences. This research focused on the unique context of upbringing in the Israeli kibbutz and examined how cultural orientation and experiences of parental engagement in Kibbutz and non-Kibbutz settings shaped adults’ earliest memories. Participants were 108 women (study 1) and 75 women and men (study 2) who were raised in traditional kibbutz upbringing or in a non-kibbutz family setting. In addition to reporting their earliest memory and age at earliest memory, participants estimated retrospectively the amount of daily time spent in interaction with parents, caregivers, and other children during the time of earliest memory. Overall, upbringing-related variations in cultural orientation were evident in the content of memories. A prediction of later age at earliest memory due to limited opportunities for parent–child interaction characteristic of traditional kibbutz upbringing was not supported. Rather, in both studies, age at earliest memory was linked to retrospective estimation of parental engagement, after controlling for childhood ecology. Study 2 revealed also a link of age at earliest memory to retrospective estimation of involvement with non-parental caregivers. These findings are congruent with the social-interaction model’s claims about the importance of interaction with caregiving adults to autobiographical memory’s development.     

The relation of the conceptual self to recent and distant autobiographical memories

Based on the self-memory system model (SMS; Conway, Singer, & Tagini, 2004) of autobiographical memory, this study uses a large sample of young and middle-aged adults to investigate the relation between individuals' current self-characteristics and the content of both their earliest childhood memory and a recent memory. In the first session, participants' current self-characteristics were assessed. In the second session, individuals provided a written narrative of their earliest childhood memory and a more recent memory (within-participants design) and rated the self themes present in each memory. In keeping with the SMS model, findings show that current self-characteristics were reflected in individuals' memories. As predicted, however, recent memories were more frequently linked to current self-characteristics than were earliest memories. All six current self-characteristics predicted the inclusion of these themes in recent memories, but only four self-characteristics were associated with memory themes in earliest memories. The relation between current self-characteristics and memory themes did not differ across young and middle-aged adults, suggesting developmental stability in these relations. Findings provide general support for the SMS model but also suggest possibilities for its extension and refinement.     

First words and first memories

In two experiments autobiographical memories from childhood were recalled to cue words naming common objects, locations, activities and emotions. Participants recalled their earliest specific memory associated with each word and dated their age at the time of the remembered event. A striking and specific finding emerged: age of earliest memory was systematically later, by several months, than the age of acquisition of the word to which it was associated. This was the case for earlier and later acquired words, for all word types, and for younger as well as older adults. It is suggested that this systematic lag reflects the formation of conceptual knowledge that is abstracted from details represented in early episodic memories. It is not until such knowledge is formed that a word cue and the conceptual knowledge in long-term to which it corresponds, can be used to access specific episodic memories. The implications of this for understanding childhood amnesia and for theories of the development of autobiographical memory are considered.     

Anchoring effects on early autobiographical memories

Studies of childhood memory typically show that our earliest memories come from between three and four years of age. This finding is not universal, however. The age estimate varies across cultures and is affected by social influences. Research from the judgments and decision-making literature suggests that these estimates might also involve a judgment under uncertainty. Therefore, they might be susceptible to less social influences such as heuristics and biases. To investigate this possibility, we conducted two experiments that used anchoring paradigms to influence participants’ estimates of their age during early autobiographical memories. In Experiment 1, participants answered either a high-anchor or a low-anchor question, and were warned that the anchor was uninformative; they went on to estimate their age during their earliest autobiographical memory. In Experiment 2, we replicated Experiment 1 and extended the design to examine additional early autobiographical memories. In both experiments, participants in the low-anchor condition gave earlier age estimates than those in the high-anchor condition. These results provide new insights into the methods used to investigate autobiographical memory. Moreover, they show that reports of early autobiographical memories can be influenced by a relatively light touch – a change to a single digit in a single question.     

The earliest memory in individuals raised in either traditional and reformed kibbutz or outside the kibbutz

In two studies we compared the age of traditional kibbutz members' first memories with the first memories of people raised in Israeli cities (Study 1) and of people who were raised in reformed kibbutzim (Study 2). Building on the socio-cultural model of autobiographical memory, we predicted and found that children raised in the traditional kibbutz, not by their parents, but by a metapelet, had a significantly later onset of autobiographical memory than children raised in reformed kibbutzim or outside the kibbutz, who were under the primary care of their parents. We also examined gender differences in reporting the earliest memory. No gender differences were observed within each setting in the age of the earliest memory, but consistent with past research, memories reported by females were more elaborate than those reported by males.     

Islands of memory: Autobiographical remembering in amnestics

In amnestics with anterograde amnesia, memories of post-onset autobiographical experiences, if present at all, are typically barren and impoverished. However, there have been sporadic reports of islands of memory--memories that are vivid, detailed, and specific to time and place. The aim of this study was to verify the presence of such memories and examine their incidence rate. Anterograde amnestics were interviewed in their home using a narrative interviewing strategy with a view to describing memory in everyday life. Each autobiographical memory of a post-onset event was coded for quantity-length, and quality-episodicity. In just over half of the amnestics (8 out of 14), a memory that was lengthy, rich in personal details, and localisable was recollected. The quantitative and qualitative aspects of these island memories were significantly different from the other autobiographical memories that the amnestics supplied. These memories were at odds with what would be expected on the basis of their performance on standardised memory instruments. Our findings suggest there is occasionally more variability in remembering of autobiographical experiences in some amnestics than has traditionally been believed.     

Islands of memory: Autobiographical remembering in amnestics

In amnestics with anterograde amnesia, memories of post-onset autobiographical experiences, if present at all, are typically barren and impoverished. However, there have been sporadic reports of islands of memory—memories that are vivid, detailed, and specific to time and place. The aim of this study was to verify the presence of such memories and examine their incidence rate. Anterograde amnestics were interviewed in their home using a narrative interviewing strategy with a view to describing memory in everyday life. Each autobiographical memory of a post-onset event was coded for quantity-length, and quality-episodicity. In just over half of the amnestics (8 out of 14), a memory that was lengthy, rich in personal details, and localisable was recollected. The quantitative and qualitative aspects of these island memories were significantly different from the other autobiographical memories that the amnestics supplied. These memories were at odds with what would be expected on the basis of their performance on standardised memory instruments. Our findings suggest there is occasionally more variability in remembering of autobiographical experiences in some amnestics than has traditionally been believed.     

Origins of adolescents’ autobiographical memories

Adolescents (N = 46; M = 12.46 years) who had previously participated in a longitudinal study of autobiographical memory development narrated their early childhood memories, interpreted life events, and completed a family history questionnaire and language assessment. Three distinct components of adolescent memory emerged: (1) age of earliest memory and insight into life events; (2) volume of early memories; and (3) density of specific memories from early childhood. Children's language, self-awareness, and theory of mind during early childhood (19–51 months) all contributed to their memories as adolescents. However, adolescents’ early reminiscing environment was the best single predictor of the age and volume of their early memories and their insight into life events. In contrast, adolescents’ delayed self-recognition and reminiscing in early childhood predicted the density of their early memories. These findings provide partial support for theories of autobiographical memory development.     

Cross-cultural and gender differences in childhood amnesia

In two experiments, we examined cross-cultural and gender differences in adults' earliest memories. To do this, we asked male and female adults from three cultural backgrounds (New Zealand European, New Zealand Maori, and Asian) to describe and date their earliest personal memory. Consistent with past research, Asian adults reported significantly later memories than European adults, however this effect was due exclusively to the extremely late memories reported by Asian females. Maori adults, whose traditional culture includes a strong emphasis on the past, reported significantly earlier memories than adults from the other two cultural groups. Across all three cultures, the memories reported by women contained more information than the memories reported by men. These findings support the view that the age and content of our earliest memories are influenced by a wide range of factors including our culture and our gender. These factors must be incorporated into any comprehensive theory of autobiographical memory.     

Assumptions of infantile amnesia: are there differences between early and later memories?

Most adults are able to provide few, if any, reports of autobiographical memories from the first years of life. Early memories that do exist have been characterised as highly emotional, containing an abundance of perceptual as opposed to propositional information, and more often in the third than the first person perspective. These qualities figure prominently in theories of the source of the phenomenon of infantile amnesia. However, early and later memories have not been directly compared with regard to these features. In the present research, we compared early and later memories in the same individuals, with the same methodology. Results indicated few objective differences between the early and later memories of women (Experiment 1) and men (Experiment 2). The findings are discussed in light of their implications for theories as to the source of infantile amnesia.