Jealousy in children is an emotion that arises when they perceive a threat to a valued relationship or feel that they are receiving less attention, love, or resources compared to someone else, often a sibling or a peer. This emotion is closely linked to anger, as the child may feel frustrated, resentful, or even hostile towards the person they believe is receiving more favor or attention. Jealousy is a complex emotion that involves feelings of insecurity, fear of loss, and a sense of injustice or unfairness.
When a child experiences jealousy, their brain's amygdala, which processes emotions, becomes activated, triggering a stress response. This can lead to an increase in cortisol, the stress hormone, and a decrease in the neurotransmitter serotonin, which regulates mood. In children who have experienced trauma, the brain's stress response system may be more sensitive, leading to more intense and frequent feelings of jealousy and anger. These children may struggle with emotional regulation and may express their jealousy through aggressive behaviors, such as hitting, biting, or destroying possessions. They may also exhibit attention-seeking behaviors, clinginess, or withdrawal as a way to cope with their emotions. Trauma-informed parenting approaches emphasize the importance of recognizing and validating the child's feelings, teaching healthy coping strategies, and providing consistent love and support to help the child feel secure in their relationships.
Understanding and Navigating Jealousy
Jealousy in children is a complex emotion that arises when they perceive a threat to a cherished bond or feel they are receiving less attention, love, or resources than someone else. This emotion, closely intertwined with anger, can leave a child feeling frustrated, resentful, and even hostile towards the person they believe is receiving more favor. Navigating the turbulent waters of jealousy requires understanding, patience, and a gentle guiding hand to help children learn to cope with these intense feelings in a healthy manner.
Unraveling Childhood Jealousy: A Guide to Understanding and Coping
The Wagon Method: Navigating Jealousy with Empathy for Children with Trauma
When a child from a difficult background displays jealousy, it's important to look beneath the surface and understand the complex emotions and experiences that may be driving this behavior. The Wagon Method provides a powerful framework for exploring what might be going on for the child and how caregivers can respond with empathy, understanding, and support.
From the perspective of the Wagon Method, jealousy may be a manifestation of unmet needs in the child's Wheels of Well-being. The child may be feeling a lack of safety, stability, love and acceptance, or a fragile sense of identity and value. These deficits can create a scarcity mindset, where the child feels they must compete for attention, affection, or resources. They may fear that if someone else gets something, there won't be enough left for them.
Past Grounded Experiences of neglect, inconsistent caregiving, or disrupted attachments may have taught the child that love and nurturing are scarce commodities that could be withdrawn at any time. They may be hypersensitive to perceived signs of rejection or favoritism, triggering feelings of jealousy and fear of abandonment.
The child's Outside Obstacles could also be exacerbating feelings of jealousy. Resource scarcity in their environment, such as lack of access to quality education, enriching experiences, or material possessions, could heighten their sense that there's not enough to go around. Hostile encounters like being bullied or excluded by peers might make them guard their relationships more possessively.
Trauma can also impact the child's "Toolbox" of emotional coping skills and "Jockey Box" of automatic responses. They may lack the emotional vocabulary to recognize and express their vulnerable feelings in healthy ways. Their threat detection system may be on high alert, primed to perceive others as competitors rather than collaborators.
When a child's wagon is carrying such a heavy load of unmet needs and painful experiences, it has trouble moving forward on the path of healing. Advocates can help lighten the load by giving the child extra reassurance of their unconditional love and acceptance. They can proactively fill the child's cup through quality one-on-one time, physical affection, and affirming messages.
Advocates can also help expand the child's Nurturing Network so they have more supportive and caring relationships to rely on. Connecting the child with mentors, therapists, teachers and peers who appreciate them for who they are can ease their fear of scarcity.
Grounded Experiences of working on shared goals, navigating conflicts constructively, and enjoying companionship without competition can give the child a new roadmap for relationships. Over time, this can help them shift from a scarcity mindset to an abundance mindset.
With patient guidance from Advocates, the child can also learn to use their "Toolbox" to identify and communicate their feelings before they escalate into jealous behaviors. They may benefit from concrete strategies like self-talk to reassure themselves of their worth, or distraction techniques to self-soothe when feelings of jealousy arise.
Most importantly, the child needs to feel seen, heard, and validated in their struggles. Shaming or punishing them for feeling jealous will likely only deepen their sense of deficiency. Advocates can normalize the child's feelings while helping them find better ways to cope and connect.
With support to build their Wheels of Well-being and lighten the load in their wagon, the child can gradually internalize a more stable sense of being loved and valued. Secure in the knowledge that there is an abundance of care to go around, they'll be freer to celebrate others' joys and invest their energy in more rewarding pursuits. Healing from a difficult background takes time, but the Wagon Method shows that with understanding and nurturance, there is hope for the journey ahead.
From the perspective of the Wagon Method, jealousy may be a manifestation of unmet needs in the child's Wheels of Well-being. The child may be feeling a lack of safety, stability, love and acceptance, or a fragile sense of identity and value. These deficits can create a scarcity mindset, where the child feels they must compete for attention, affection, or resources. They may fear that if someone else gets something, there won't be enough left for them.
Past Grounded Experiences of neglect, inconsistent caregiving, or disrupted attachments may have taught the child that love and nurturing are scarce commodities that could be withdrawn at any time. They may be hypersensitive to perceived signs of rejection or favoritism, triggering feelings of jealousy and fear of abandonment.
The child's Outside Obstacles could also be exacerbating feelings of jealousy. Resource scarcity in their environment, such as lack of access to quality education, enriching experiences, or material possessions, could heighten their sense that there's not enough to go around. Hostile encounters like being bullied or excluded by peers might make them guard their relationships more possessively.
Trauma can also impact the child's "Toolbox" of emotional coping skills and "Jockey Box" of automatic responses. They may lack the emotional vocabulary to recognize and express their vulnerable feelings in healthy ways. Their threat detection system may be on high alert, primed to perceive others as competitors rather than collaborators.
When a child's wagon is carrying such a heavy load of unmet needs and painful experiences, it has trouble moving forward on the path of healing. Advocates can help lighten the load by giving the child extra reassurance of their unconditional love and acceptance. They can proactively fill the child's cup through quality one-on-one time, physical affection, and affirming messages.
Advocates can also help expand the child's Nurturing Network so they have more supportive and caring relationships to rely on. Connecting the child with mentors, therapists, teachers and peers who appreciate them for who they are can ease their fear of scarcity.
Grounded Experiences of working on shared goals, navigating conflicts constructively, and enjoying companionship without competition can give the child a new roadmap for relationships. Over time, this can help them shift from a scarcity mindset to an abundance mindset.
With patient guidance from Advocates, the child can also learn to use their "Toolbox" to identify and communicate their feelings before they escalate into jealous behaviors. They may benefit from concrete strategies like self-talk to reassure themselves of their worth, or distraction techniques to self-soothe when feelings of jealousy arise.
Most importantly, the child needs to feel seen, heard, and validated in their struggles. Shaming or punishing them for feeling jealous will likely only deepen their sense of deficiency. Advocates can normalize the child's feelings while helping them find better ways to cope and connect.
With support to build their Wheels of Well-being and lighten the load in their wagon, the child can gradually internalize a more stable sense of being loved and valued. Secure in the knowledge that there is an abundance of care to go around, they'll be freer to celebrate others' joys and invest their energy in more rewarding pursuits. Healing from a difficult background takes time, but the Wagon Method shows that with understanding and nurturance, there is hope for the journey ahead.
List of Services
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Agitated For children with a history of trauma, agitation can be particularly challenging, as their brain's threat response system becomes hyperactive, leading to heightened sensitivity and reduced emotional regulation. As a result, these children may struggle to communicate their feelings effectively and may react disproportionately to seemingly minor triggers, their brains primed to detect and respond to potential threats based on past traumatic experiences.Agitated
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Annoyed For children who have experienced trauma, this emotion can be particularly challenging to manage, as their brains may be more sensitive to perceived threats or stressors, leading to heightened emotional responses that can be difficult to regulate. By recognizing these emotional responses as a manifestation of the child's past experiences and providing a safe, supportive environment, parents can help their children cope with and manage their emotions in a healthy way.Annoyed
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Enraged Enraged, an intense and extreme form of anger, is a powerful emotion that can consume a child, leaving them feeling overwhelmed, threatened, and powerless. When a child experiences rage, their amygdala, the brain's emotional processing center, becomes highly activated, triggering a surge of stress hormones that further intensify their emotional response. Children who have experienced trauma may be particularly vulnerable to rage, as their brains may be more sensitive to perceived threats and have difficulty regulating emotions. Rage can manifest in explosive outbursts, including screaming, crying, physical aggression, or destructive behavior, as the child struggles to express themselves in a calm and constructive manner.Enraged
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Frustrated For children, frustration can be particularly challenging, as they may encounter situations that exceed their current abilities or when their needs are not met promptly. In those who have experienced trauma, the brain's stress response system may be hyperactive, leading to more intense reactions and a lower tolerance for frustration. Trauma-informed parenting approaches are crucial in helping these children develop healthy coping mechanisms and emotional regulation skills to navigate the challenges of frustration.Frustrated
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Furious Fury, a turbulent and overwhelming emotion, grips the hearts of those who feel wronged or treated unjustly. In children, this intense anger can be especially challenging to navigate, as their developing brains struggle to regulate and communicate their feelings effectively. For those who have experienced trauma, the path to managing fury becomes even more complex, as their sensitive stress response systems are easily triggered, leading to frequent emotional outbursts. Trauma-informed parenting offers a glimmer of hope, emphasizing the power of a safe, nurturing environment and the importance of validating a child's emotions while teaching them healthy coping mechanisms to process their anger constructively.Furious
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Hostile When a child's life is marred by trauma, their brain becomes a battleground where emotions run rampant and self-control is a distant dream. The amygdala, once a gentle guardian, transforms into a hair-trigger alarm, seeing threats lurking in every shadow, while the prefrontal cortex, the wise regent of reason, is left powerless to rein in the chaos. The result is a child consumed by a firestorm of rage, lashing out at the world with words that cut like knives and actions that speak louder than any scream.Hostile
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Irritated For children who have experienced trauma, irritation and anger can be even more intense and frequent due to the impact of trauma on the brain's development and function. Trauma can lead to a hyperactive amygdala, causing stronger reactions to perceived threats, and an underdeveloped prefrontal cortex, resulting in difficulties with emotional regulation and impulse control.Irritated
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Jealous Jealousy in children is a complex emotion that arises when they perceive a threat to a cherished bond or feel they are receiving less attention, love, or resources than someone else. This emotion, closely intertwined with anger, can leave a child feeling frustrated, resentful, and even hostile towards the person they believe is receiving more favor. Navigating the turbulent waters of jealousy requires understanding, patience, and a gentle guiding hand to help children learn to cope with these intense feelings in a healthy manner.Jealous
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Mad When a child is mad, it's like a volcano erupting inside them, filling them with a fiery rage that consumes their entire being. Their little faces scrunch up, their fists clench tightly, and their voices rise to a deafening roar as they struggle to express the overwhelming emotions surging through their small bodies. For children who have experienced trauma, this anger can be even more intense and frequent, like a ticking time bomb waiting to explode at the slightest provocation. Caregivers must approach these outbursts with patience and understanding, recognizing that beneath the surface of this angry exterior lies a fragile child in need of love, support, and guidance to help them navigate the turbulent waters of their emotions.Mad
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Offended Have you ever felt the sting of an insult or the weight of disrespect? For children, the feeling of being offended can be a powerful and overwhelming experience that strikes at the core of their self-worth and dignity. When a child perceives that someone has wronged them, a storm of emotions can arise, fueled by the injustice and unfairness of the situation. This feeling of offense is closely intertwined with anger, frustration, and resentment, as the child grapples with the impact of the perceived slight on their sense of self.Offended
Related Anger
The Story of feeling Jealous
The Cornhusk Doll Incident: When an Orphan's Envy Spilled Over
Sarah stared out the window of the covered wagon, watching the endless plains roll by under the blazing summer sun. At eight years old, she had already experienced more hardship and loss than most faced in a lifetime. Orphaned at a young age, Sarah had been passed between relatives and neighbors, never quite finding a place to belong. That is, until the Johnsons took her in a year ago.
While grateful for their kindness, a part of Sarah always felt like an outsider looking in on their close-knit family. She watched silently as Mrs. Johnson tenderly brushed her daughter Emily's hair each morning, laughing and talking, the same way Sarah's own mother used to before she fell ill. She noticed how Mr. Johnson beamed with pride as his son William mastered new skills, like driving the oxen or starting the campfire. They were things Sarah also worked hard at, desperately hoping for a scrap of praise or affection, but it never came.
One evening after a long day on the trail, the wagon train circled up to make camp near a rippling stream. Tired from the journey, Mrs. Johnson suggested the children go play by the water before supper. William grabbed his fishing pole and Emily produced her rag doll from a trunk. Sarah watched them skip towards the creek, giggles and chatter floating on the breeze.
Suddenly, Emily turned back towards Sarah with an reluctant look. "I suppose you can come too, if you want," Emily said flatly before running to catch up with William. Sarah felt a pang of hurt and anger rising in her chest. She was always an afterthought, the tagalong, never quite accepted.
Sarah followed slowly behind the other children. When she reached the stream bank, Emily was gently washing her doll's face in the clear water, cooing to it lovingly. "Ma made this doll just for me. She stayed up for nights sewing it as a special surprise. See the blue dress? Blue is my favorite color," Emily said proudly.
Sarah felt her cheeks burn as she studied the beautiful cornhusk doll in her own hands, made from old husks and rags she had secretly gathered each night. It was crude and plain compared to Emily's doll.
Blinking back tears, Sarah looked up to see William smiling as he reeled in a large trout. "That's my boy!" called out Mr. Johnson. He walked over and patted William on the back approvingly.
"I helped gather the worms this morning," Sarah piped up, desperate for any acknowledgment. But Mr. Johnson just nodded absentmindedly, his eyes still on William and the trout.
Something inside Sarah snapped. Without thinking, she grabbed Emily's beloved doll from the grass and threw it as hard as she could into the bubbling center of the stream. Emily cried out in shock, running toward the water.
Sarah instantly regretted it, horrified at what she had done. The jealousy and hurt that had consumed her was quickly replaced with guilt and shame. She raced after Emily, plunging into the cold stream fully clothed. Sarah came up sputtering but clutching the doll. She pushed it into Emily's hands as hot tears streamed down her face.
"I'm sorry, I'm so sorry! I don't know why I did that. You have every right to hate me," Sarah sobbed.
To her surprise, Emily pulled her into a tight hug. "I could never hate you. I know it's been hard. You've lost so much," she said gently. "But you're my sister now. I'm sorry if I ever made you feel otherwise. I love you."
Sarah clung to Emily, the pain and loneliness of the past eight years pouring out. For the first time, she felt truly seen, accepted and loved - as a daughter, as a sister. She still had a long way to go in healing. But thanks to the compassion and understanding of her new family, Sarah finally began to feel the seeds of belonging take root in her weary heart. Together, hand in hand, the two girls walked out of the stream to join their family.
While grateful for their kindness, a part of Sarah always felt like an outsider looking in on their close-knit family. She watched silently as Mrs. Johnson tenderly brushed her daughter Emily's hair each morning, laughing and talking, the same way Sarah's own mother used to before she fell ill. She noticed how Mr. Johnson beamed with pride as his son William mastered new skills, like driving the oxen or starting the campfire. They were things Sarah also worked hard at, desperately hoping for a scrap of praise or affection, but it never came.
One evening after a long day on the trail, the wagon train circled up to make camp near a rippling stream. Tired from the journey, Mrs. Johnson suggested the children go play by the water before supper. William grabbed his fishing pole and Emily produced her rag doll from a trunk. Sarah watched them skip towards the creek, giggles and chatter floating on the breeze.
Suddenly, Emily turned back towards Sarah with an reluctant look. "I suppose you can come too, if you want," Emily said flatly before running to catch up with William. Sarah felt a pang of hurt and anger rising in her chest. She was always an afterthought, the tagalong, never quite accepted.
Sarah followed slowly behind the other children. When she reached the stream bank, Emily was gently washing her doll's face in the clear water, cooing to it lovingly. "Ma made this doll just for me. She stayed up for nights sewing it as a special surprise. See the blue dress? Blue is my favorite color," Emily said proudly.
Sarah felt her cheeks burn as she studied the beautiful cornhusk doll in her own hands, made from old husks and rags she had secretly gathered each night. It was crude and plain compared to Emily's doll.
Blinking back tears, Sarah looked up to see William smiling as he reeled in a large trout. "That's my boy!" called out Mr. Johnson. He walked over and patted William on the back approvingly.
"I helped gather the worms this morning," Sarah piped up, desperate for any acknowledgment. But Mr. Johnson just nodded absentmindedly, his eyes still on William and the trout.
Something inside Sarah snapped. Without thinking, she grabbed Emily's beloved doll from the grass and threw it as hard as she could into the bubbling center of the stream. Emily cried out in shock, running toward the water.
Sarah instantly regretted it, horrified at what she had done. The jealousy and hurt that had consumed her was quickly replaced with guilt and shame. She raced after Emily, plunging into the cold stream fully clothed. Sarah came up sputtering but clutching the doll. She pushed it into Emily's hands as hot tears streamed down her face.
"I'm sorry, I'm so sorry! I don't know why I did that. You have every right to hate me," Sarah sobbed.
To her surprise, Emily pulled her into a tight hug. "I could never hate you. I know it's been hard. You've lost so much," she said gently. "But you're my sister now. I'm sorry if I ever made you feel otherwise. I love you."
Sarah clung to Emily, the pain and loneliness of the past eight years pouring out. For the first time, she felt truly seen, accepted and loved - as a daughter, as a sister. She still had a long way to go in healing. But thanks to the compassion and understanding of her new family, Sarah finally began to feel the seeds of belonging take root in her weary heart. Together, hand in hand, the two girls walked out of the stream to join their family.
The Story Explained Through the Wagon Method
Untangling the Roots of Jealousy: Sarah's Journey to Heal Attachment Wounds
Sarah's story brings to life the complex emotional experience of jealousy for a child with a difficult background. Through the lens of the Wagon Method, we can understand the deeper roots of Sarah's jealous behavior and the unmet needs it may be expressing.
Sarah's Wheels of Well-being have likely been compromised by the loss and instability she's experienced. Losing her parents at a young age and being passed between relatives disrupted her sense of safety, security, and belonging. This shaky foundation makes it difficult for Sarah to feel confident in her worth and place in the world.
When she sees Mrs. Johnson tenderly brushing Emily's hair or Mr. Johnson praising William, it triggers Sarah's unmet needs for parental love and approval. Her past grounded experiences of inconsistent caregiving have taught her that love is scarce and she must vie for any scraps of affection. So Emily and William's bond with their parents feels like a threat, activating Sarah's fear that there won't be enough love left for her.
Sarah's resentment towards Emily's special doll also reveals the resource scarcity in her outside obstacles. Sarah has had little opportunity for personal possessions, let alone cherished gifts made with love. So Emily's doll becomes a symbol of everything Sarah lacks and longs for. When these painful comparisons boil over into Sarah throwing the doll in the stream, it's an eruption of the hurt, fear and longing she's been stuffing down.
But like most children with trauma, Sarah lacks the emotional toolbox to process and express these vulnerable feelings in a healthy way. Her automatic jockey box reflex is to lash out and try to eliminate the source of her distress - Emily's doll. She immediately regrets this impulsive action, but doesn't yet have the skills to repair the damage.
Fortunately, Emily responds with empathy and understanding rather than rejection or punishment. By validating Sarah's painful past and unmet needs, she gives Sarah a profound experience of being seen and accepted, even at her worst. This compassionate response is the first step in expanding Sarah's nurturing network to include Emily as a true sister and ally.
Emily's forgiveness and assertion of her love begins to fill Sarah's cup, helping her internalize a new grounded experience of unconditional care. It plants the seeds of safety and belonging she needs to start healing her attachment wounds. Over time, with more reparative moments like this, Sarah can start to believe in her inherent worth and trust that there is enough love to go around.
The other Johnsons can support Sarah by intentionally carving out regular one-on-one time with her, pouring into her with affection and affirmation to proactively meet her attachment needs. Helping Sarah find areas where she can experience success and mastery, whether a hobby or chores that employ her strengths, can boost her self-worth and reduce her urge to compete.
The Johnsons can also model and teach Sarah emotion skills like labeling her feelings, self-soothing techniques, and phrases to express herself assertively ("I feel hurt and scared when..."). Giving her scripts to repair rifts and tools to build connection will help her relate in healthier ways.
With patient love and guidance from her new family as advocates, Sarah can gradually internalize secure attachment, emotional regulation skills, and a stable identity. Her past wounds may still ache at times, but she'll be better equipped to process triggers and invest her energy in mutual relationships.
Tending to Sarah's wheels, expanding her toolbox, processing her grounded experiences, and strengthening her nurturing network will help lighten the painful burdens in her wagon over time. She can never erase her history of loss, but she can learn to integrate it into a cohesive narrative of resilience and growth. As Sarah begins to internalize how deeply she belongs and matters, she'll be freer to embrace the joys available to her on the trail ahead.
Sarah's Wheels of Well-being have likely been compromised by the loss and instability she's experienced. Losing her parents at a young age and being passed between relatives disrupted her sense of safety, security, and belonging. This shaky foundation makes it difficult for Sarah to feel confident in her worth and place in the world.
When she sees Mrs. Johnson tenderly brushing Emily's hair or Mr. Johnson praising William, it triggers Sarah's unmet needs for parental love and approval. Her past grounded experiences of inconsistent caregiving have taught her that love is scarce and she must vie for any scraps of affection. So Emily and William's bond with their parents feels like a threat, activating Sarah's fear that there won't be enough love left for her.
Sarah's resentment towards Emily's special doll also reveals the resource scarcity in her outside obstacles. Sarah has had little opportunity for personal possessions, let alone cherished gifts made with love. So Emily's doll becomes a symbol of everything Sarah lacks and longs for. When these painful comparisons boil over into Sarah throwing the doll in the stream, it's an eruption of the hurt, fear and longing she's been stuffing down.
But like most children with trauma, Sarah lacks the emotional toolbox to process and express these vulnerable feelings in a healthy way. Her automatic jockey box reflex is to lash out and try to eliminate the source of her distress - Emily's doll. She immediately regrets this impulsive action, but doesn't yet have the skills to repair the damage.
Fortunately, Emily responds with empathy and understanding rather than rejection or punishment. By validating Sarah's painful past and unmet needs, she gives Sarah a profound experience of being seen and accepted, even at her worst. This compassionate response is the first step in expanding Sarah's nurturing network to include Emily as a true sister and ally.
Emily's forgiveness and assertion of her love begins to fill Sarah's cup, helping her internalize a new grounded experience of unconditional care. It plants the seeds of safety and belonging she needs to start healing her attachment wounds. Over time, with more reparative moments like this, Sarah can start to believe in her inherent worth and trust that there is enough love to go around.
The other Johnsons can support Sarah by intentionally carving out regular one-on-one time with her, pouring into her with affection and affirmation to proactively meet her attachment needs. Helping Sarah find areas where she can experience success and mastery, whether a hobby or chores that employ her strengths, can boost her self-worth and reduce her urge to compete.
The Johnsons can also model and teach Sarah emotion skills like labeling her feelings, self-soothing techniques, and phrases to express herself assertively ("I feel hurt and scared when..."). Giving her scripts to repair rifts and tools to build connection will help her relate in healthier ways.
With patient love and guidance from her new family as advocates, Sarah can gradually internalize secure attachment, emotional regulation skills, and a stable identity. Her past wounds may still ache at times, but she'll be better equipped to process triggers and invest her energy in mutual relationships.
Tending to Sarah's wheels, expanding her toolbox, processing her grounded experiences, and strengthening her nurturing network will help lighten the painful burdens in her wagon over time. She can never erase her history of loss, but she can learn to integrate it into a cohesive narrative of resilience and growth. As Sarah begins to internalize how deeply she belongs and matters, she'll be freer to embrace the joys available to her on the trail ahead.
Supporting Research and Sources
- Bath, H. (2015). The three pillars of trauma-informed care. Reclaiming Children and Youth, 23(4), 5-11.
- Donovan, W. L., & Susser, M. (2011). Jealousy and envy in young children: Emotional, cognitive, and neurobiological underpinnings. In S. L. Hart & M. Legerstee (Eds.), Handbook of jealousy: Theory, research, and multidisciplinary approaches (pp. 424-443). Wiley-Blackwell.
- Dozier, M., Zeanah, C. H., & Bernard, K. (2013). Infants and toddlers in foster care. Child Development Perspectives, 7(3), 1093-1099.
- Hart, S. L., & Legerstee, M. (2010). Handbook of jealousy: Theory, research, and multidisciplinary approaches. Wiley-Blackwell.
- Volling, B. L., Kennedy, D. E., & Jackey, L. M. (2010). The development of sibling jealousy. In S. L. Hart & M. Legerstee (Eds.), Handbook of jealousy: Theory, research, and multidisciplinary approaches (pp. 387-417). Wiley-Blackwell.