Transcript
Professor Regina Miranda My name is Regina Miranda. I’m a Professor of Psychology at Hunter College, of the City University of New York, and my research seeks to understand why young people think about suicide and whether the form and the content of their suicidal thinking might inform us about their risk of making future suicide attempts.
[Pause] Suicide ideation involves having thoughts about ending one’s life and these can be thoughts that are more passive, such as wishing that oneself were dead, or more active suicidal thoughts, which involves actually wanting to kill oneself and thinking about methods that might – one might use to kill oneself. This differs from suicide attempts, which are – involve intentional self-injury with the intent to die. So, meaning when a person engages in self-injurious behaviour with the intent to die.
[Pause] There are a number of popular contemporary psychological theories of suicide. This includes the Integrated Motivational-Volitional Model of suicide, the Interpersonal Theory of Suicide, the Three-Step Theory of Suicide, the Cultural Model of Suicide and others. And these theories tend to address factors that lead people to think about suicide and also, that lead people to transition from thinking about suicide to attempting suicide. And they actually don’t tend to address, as much, suicide ideation itself. So, what do young people actually think about when they think about suicide and what – kind of, how do they think about it?
And so, two models that do that to some degree are the Cognitive Theory of Suicide – Wenzel and Beck’s Cognitive Theory of Suicide, and Rudd’s Fluid Vulnerability Theory of Suicide. Rudd’s Fluid Vulnerability Theory of Suicide draws upon Aaron Beck’s theory of suicidal modes, meaning interconnected networks of thoughts, feelings, behaviours and motivation related to suicide, that are triggered when somebody thinks about or attempts suicide. And the idea is that the more one thinks about or makes a suicide attempt, the less it may take them to think about or attempt suicide in the future. Because the more that suicidal mode is triggered, the lower the threshold for triggering a future suicidal episode. So that now, it takes less for a person to start thinking about or to attempt suicide. And so, this model distinguishes between more chronic suicide risk and acute suicide risk, which tends to be impacted by more acute factors, like negative life events that happen.
Similarly, the Cognitive Model of Suicide suggests that when – that people can have suicide related schema. So, a schema is a mental representation that helps us organise and process information. And when a suicide related schema is activated, people experience hopelessness about the future and that leads them to narrow their focus to suicide related information or stimuli. Meaning that they start thinking about suicide and may have difficulty because of its narrowed attention to suicide-related information disengaging their attention from suicidal thoughts.
And to the degree that they have diff – that difficulty disengaging attention from suicide related information, when they reach a certain threshold of distress or tolerance for the distress that they are experiencing, they’re more likely to transition from thinking about suicide to attempting suicide. So, that idea of this biased attention to suicide related information as a more chronically activated suicidal related schema or suicidal mode, is what – part of what informs some of the work that we’ve been doing trying to understand different profiles of adolescent suicide ideation.
[Pause] It’s important to understand why adolescents think about suicide, because that can not only inform future risks of attempting suicide, but it can also inform how we intervene to address suicide ideations. Often, we assess whether suicide ideation is present, whether it’s active or passive and characteristics like ‘wish to die’, but there has been relatively little work on understanding specific features of suicide ideation that might be informative about risk of leading to suicide attempt. So, there might be some teenagers who think about suicide very rarely, who think about it once in a while, and those teenagers might be different from teenagers who think about suicide more persistently. And that might have implications for how interventions are designed to address their suicidal ideations. In addition, oftentimes, when we train Clinicians to perform risk assessments, or when we learn to do risk assessments ourselves, there tends to be this fear based – there’s a – tends to be a fear that gets activated in a Clinician when they hear that someone is thinking about suicide. And that may be partly due to lack of familiarity with suicide ideation and really try to understand suicide ideation and engaging with teenager’s suicidal thoughts to better understand them. I think that the more that we can engage with those thoughts and understand those thoughts, the less we’ll be afraid when somebody tells us that they’re thinking about suicide. Because we’ll be able to better understand more about their risk profile, but also about the suffering that is leading them to think about killing themselves.
[Pause] One of the fact – study cognitive factors that is – has been found to be a correlate and a predictor of suicide ideation is hopelessness. Meaning a tendency to expect that bad things will happen in one’s future, that good things won’t happen in one’s future and that no matter what, one is helpless to stop those things from happening. They’re not happening. So, it has to do with expectations about the future and we know that those are associated with suicide ideation and suicide attempts. And so, what some of our work has sought to do is to try to better understand and tease apart the various components of hopelessness that might be involved in suicide ideation that – or that might precipitate suicide ideation. And we focused on understanding the differences between hopelessness involving expecting negative things to happen in one’s future, versus hopelessness that involves expecting an absence of positive future expectations.
And what some of our past research has suggested, and that of others, is that one unique component of hopelessness that may predict suicidal thinking independently of depression is a tendency to expect that good things won’t happen in one’s future. So, a lack of desired future outcomes. And we’ve also tried to understand how different forms of repetitive thinking might lead to those hopelessness related cognitions or thoughts. And we’ve studied that in relationship to the self-focused rumination or mood focused rumination, drawing on the work of Susan Nolen-Hoeksema and others, and specifically try to distinguish between brooding rumination, which was defined by Nolen-Hoeksema and others as “a tendency to dwell on one’s negative moods and constantly feeling the consequences,” versus reflection, which had been thought to be a more adaptive form of rumination that involves trying to better understand the reasons for one’s negative mood.
And so, past research had found that brooding, the brooding form of rumination, was associated with increases in depressive symptoms over a time, whereas reflective rumination is associated with decreases in depressive symptoms over time. And in a paper that our lab published with Dr Nolen-Hoeksema on 2007, we found, for the first time, I believe, that both brooding and reflection were associated with increases in suicide ideation over time. And so, some of our research has, since then, tried to understand the circumstances under which reflection, which is thought to be a more adaptive form of rumination, might also lead to increases in suicide ideation over time. And so, that is one form of repet – maladaptive repetitive thinking that we’ve studied in relation to suicide ideation.
Another form of repetitive thinking that we’ve been focused on is future-oriented repetitive thinking, or future-oriented rumination. So, the tendency to spend time considering whether bad outcomes will happen in one’s future or whether good outcomes will not happen in one’s future. And in a paper that we recently published, we found that pessimistic future-oriented repetitive thinking, so the tendency to consider, repeatedly, that bad things would happen or that good things won’t happen in one’s future was associated with increases in suicide ideation over time among young adults and that that might be explained by increases in hopelessness related cognition.
So, it’s the more one spends time in that mental rehearsal of pessimistic future expectation, the more fluently those types of thoughts, or those types of expectations or predictions about the future, are made. And that might, ultimately, lead a person to believe that their pessimistic future expectations are inevitable and to become hopeless about the future, and to lead to increases in depressive symptoms, which are associated with increases in suicidal thoughts.
[Pause] Well, research by Susan Nolen-Hoeksema, Ed Watkins, Mark Williams and others, has suggested that rumination impacts problem-solving. So, the more a person spends time thinking about why they’re feeling badly and about the causes, feelings and consequences of that negative mood, and the more that may impact their ability to recall instances in which they were able to effectively solve problems. Because the more they’re in their head, they’re more they’re – the less they’re in the present moment. And so, rumination may impact risk for suicide ideation by decreasing a person’s problem-solving abilities and specifically the ability to think about or remember situations in the past where they might have been able to effectively solve problems. And this has been proposed by Mark Williams and others to be due to overly general autobiographical memory, which has been found to be associated with ruminative thinking or perceptive thinking [pause].
That’s an excellent question and that’s one that we’ve been trying to study for the past decade or so. We actually don’t have a definitive answer on suicide ideation subtypes that might predict risk of a suicide attempt in the future, but we do have some clues, based on current research and based on some research that we’re doing. Specifically, we’ve been focused on trying to understand suicide ideation or suicidal thoughts that are precipitated by just freak events and that last a shorter period of time and that happen once in a while, not very often, versus suicide ideation that is more persistent, that might happen every day or that might happen intermittently.
And so, some preliminary data that we’re currently looking at suggests that suicidal thoughts that are more persistent might increase an adolescent’s risk of making a suicide attempt in the future, but also, if they make a suicide attempt, of making that attempt sooner. And we’ve been trying to understand what some of the attention-based mechanisms might be involved in that risk. So, whether it’s difficulty disengaging their attention or greater engagement of attention to suicide related material, or more difficulty disengaging their attention from suicide related information or thoughts. And trying to understand whether those mechanisms might explain increased risk of making a suicide attempt in the future.
This work is very preliminary. We haven’t published it yet. We’re currently – we just completed a study on this topic and we’re getting ready to publish those data. And we’ve been engaged in trying to better understand what distinguishes adolescents who think about suicide very briefly from those who think about it more intermittently and more persistently. Not only including phenomenology of those suicidal thoughts, but also, their past history of suicidal thoughts and behaviour. But we also have data from studies with adults using ecological momentary assessments, so the work of Evan Kleiman and others, that had suggested that suicide ideation that remains more elevated and persistent over time is also associated with increased risk of having a recent suicide attempt.
[Pause] So, that’s also a question that we’re engaged in trying to understand what factors distinguish teenagers who think about suicide or what features of their suicidal ideation distinguishes from – who think about suicide from those who go on to attempt suicide. And a paper that we recently published suggests that – this is with a hospital-based sample. So, we recruited teenagers from hospitals primarily in New York City and we interviewed them in detail about their suicidal ideation, including what they were thinking about when they were thinking about suicide, how long their thoughts lasted, their – the degree to which they wanted to die when they thought about killing themselves, and the methods that they thought about when they thought about killing themselves.
And what we found was that teenagers who presented with suicidal thoughts and – but who’d had a past history of suicide attempts, differed significantly from those who presented with suicidal thinking, but did not have a past history of a suicide attempt. And specifically, they more often reported that when they thought about killing themselves, they thought about it in pictures. They had suicide related imagery. Generally speaking, a substantial proportion of all of the teenagers in our study, whether they presented with suicidal thoughts or suicide attempts, reported that when they thought about killing themselves, they thought in pictures. They had suicide related imagery. However, those who had a past history of a suicide attempt did so more often than those who were thinking about suicide without having previously made a suicide attempt.
They also reported suicidal thinking that was of a greater duration, and those who made a suicide attempt, who had presented with a suicide attempt, also reported a greater wish to die when they had thought about killing themselves, and also tended to think about methods such as a drug overdose or ingestion, which is a more acceptable method, or might’ve been a more acceptable method for them.